EP0429564A1 - Roller, in particular for rolling mills and metallurgical plants - Google Patents

Abstract

A cylinder particularly useful in rolling mills and metallurgical plants comprises a body provided with a through axial bore and an axis having several stepped sections. The cylinder body is held against the center section of the axle. On the outer sections of the axis are arranged axially movable hollow cylindrical studs which engage the outer sections of the axis by means of a splined shaft with multiple shims. The cylindrical studs can engage, preferably hydraulically, the movable housings of the studs arranged in a rotary manner on the cylinder frame, according to the principle of connection by a splined shaft with multiple shims. The cylinder drives can be integrated into the cylinders. In rolling mills, the rolls are arranged in pairs on cylinder housings and these are mounted on support discs capable of being rotated about a common axis of rotation. The cylinder housings can be moved and locked on the support discs provided with openings at the height of the cylinder grip.

Description

 Roll, in particular for rolling mills and smelters

The invention relates to a roller, in particular for rolling mills and steelworks.

For the purposes of the invention, rolls for rolls and steelworks include generally driven and non-driven rolls or rollers, in particular the rolls in roll stands for producing rolled profiles, such as rails for rail traffic and for bridge constructions , Profiles for the construction industry. general civil engineering, the underground and underground operation on pits, rollers and rolls for the production of welded longitudinal seam pipes and welded spiral pipes, rolls for the production of hot wide strip, rolls in hot wide strip lines, rolls in continuous casting plants, further rolls and rolls for the production of Aluminum strips, copper strips, etc., are also rolls and rolls for plants for paper production, for plants for winding paper webs, especially the winding shafts, on which the paper webs to bundles or bundles of smaller width and / or are wound with a smaller diameter, to understand the rollers in calenders for winding plastic films, such as hard PVC sheets, as well as for transporting and winding up the plastic sheets extruded from slot dies, from which, for example, for the food industry containers are deep-drawn, continue si nd to be understood as the rollers for the textile industry.

Replacement sheet Rolling stands in the sense of the invention are also to be understood as strand guiding stands in continuous casting plants, calenders, generally machine frames, in which rolls or rolls with and without drive are mounted.

Due to the high rolling speeds for the starting material to be rolled into strips and profiles, pipes, etc. (slabs, billets) and due to the high transport speeds of the profiles and strips (cold strip, hot strip, continuous casting), plastic-paper and textile webs - The same applies to the other technical areas mentioned - if there are high production losses when rolling - or changing rolls when changing to another profile, or when replacing damaged rolls or rolls.

Apart from the labor-intensive effort involved in removing and installing the rollers and rollers, in many cases a time-consuming adjustment or centering of the rollers or rollers must be carried out.

The invention has for its object to provide a roller that allows a quick change and also a quick adjustment and centering, as well as a fully automatic axial control.

This object is achieved according to a first solution principle in that the roller body has an axially continuous bore and an axle (5) with several stepped axle sections, the roller body is non-positively connected to the central axle section, and the hollow cylindrical pins are axially displaceable on the outer axle sections are arranged, the inner pin portions are in engagement with the roller body via a steep thread, which

REPLACEMENT LEAF The spigots are in engagement with the outer axle sections via a splined shaft connection and can be brought into engagement with the spigot receptacles rotatably mounted in the roll stand according to the principle of the splined shaft connection.

According to a preferred exemplary embodiment, the. On its end faces, the roller body engages with adjusting rings which engage with the outer pin sections via the splined shaft connection.

As soon as the pins are in engagement with the pin receptacles after a roll change and are additionally locked in them, for example by bolts, an adjustment or centering of the roll body to the center plane of the roll stand can be carried out by simultaneously turning the adjusting rings in opposite directions.

This object is further achieved according to the first solution principle in that the roller body has an axially continuous bore and an axis with a plurality of stepped axle sections, the roller body is non-positively connected to the central axle section, and the hollow cylindrical pins are axially displaceable on the outer axle sections are arranged, the inner journal sections form hydraulic pistons which can be acted upon on both sides, the journals engage with the outer axle sections via a splined shaft connection and can be brought into engagement with the journal receptacles rotatably mounted in the roll stand on the principle of the multiple splined shaft connection.

ER ^SA TZBLATT According to a second solution principle, this object is achieved in that the roller body has an axially continuous bore and an axis with a plurality of stepped axis sections, the roller body is non-positively connected to the central axis section, and the hollow cylindrical pins on the multi-spline shaft pins in the roll stand rotatably mounted pin receptacles are arranged axially displaceable, the inner pin sections form hydraulic pistons which can be acted upon on both sides, and the outer pin sections can be brought into and out of engagement with the outer axle sections according to the principle of the multi-spline connection.

According to the invention, when the roll is changed according to the first solution principle, the roll body with the pins is removed as a structural unit from the roll stand, while according to the second solution principle the pins remain in the pin receptacles of the roll stand and only the roll body is replaced.

These explanations apply in principle to non-driven rollers and driven rollers, the journal receptacles of which are coupled to a drive of a conventional type and which are not mentioned further below.

When changing the roll, the roll is first supported by a changing device, then the pins are moved into the through bore of the roll body at least up to the plane of the end face of the roll body or into the pin receptacles, so that the pins are removed from the roll stand (stand, Frame etc.) or come free from the roller body, then the roller body with the inserted pin or without pin is removed with the changing device

REPLACEMENT LEAF and exchanged for another roller body with the inserted pin or without pin, the roller body aligned, the pin mechanically or hydraulically moved into the pin receptacles or the pin moved into the bore of the roller body with simultaneous centering.

It is readily apparent that, for example when rolling profiles, it is possible to convert to other profile cross sections without the previously long changeover times, which is particularly advantageous in the case of small batch sizes. In general, this applies to all profile rollers.

Such rollers are also readily usable, for example, in the paper industry with which paper webs are wound up on cardboard tubes and the like and the paper webs wound into bundles with their tubes can be exchanged quickly for new tubes for the next bundles. The same applies to the textile industry.

In many cases it would be desirable to be able to adjust the roller in the axial direction during the operation of the roller, be it to influence the edge profile of strips to be rolled or to ensure better running or better winding of film or paper - and textile webs to reach.

In a further embodiment of the invention, therefore, in accordance with a preferred exemplary embodiment, the one stand of the roll stand has an adjusting device for the axial adjustment of the roll during rolling operation, wherein in the housing of the adjusting device a worm meshes with a worm wheel, the worm wheel on the inside Circumference engages with an intermediate ring via a trapezoidal thread, in which an inner ring is rotatably mounted

REPLACEMENT LEAF is, and the inner ring has tension and compression bolts which are connected to the bearing housing of a thrust bearing arranged on one end side of the roller body.

The use of the worm ensures an axial adjustment with high resolution and low susceptibility to faults, especially in the heavy machinery sector.

In many cases, the change from driven rollers is cumbersome due to the limited space and requires more time.

For these reasons, according to a further embodiment of the invention and according to a first embodiment principle, the roller body has an axially continuous bore and is rotatably mounted on an axis, the central axis section having stator windings, the rotor windings being arranged on the opposite inner wall of the roller body , the bearings are arranged between the outer axis sections and the roller body, the hollow cylindrical pins on the multi-spline pins, the pin receptacles rotatably mounted in the roller, are axially displaceable, the inner pin sections form hydraulic pistons which can be acted upon on both sides, and the outer pin sections can be brought into engagement with the outer axle sections according to the principle of the splined shaft connection.

In a further embodiment of this embodiment, the axis and the multi-spline shafts are hollow cylindrical, the multi-spline shafts journaling a hollow cylindrical piston rod and, with the formation of pressure chambers, a hollow cylindrical piston which can be acted upon hydraulically on both sides, the pistons and the piston rods

REPLACEMENT LEAF Form coupling elements with the axial bore of the axle, each telescopically engaged with a tube arranged in the journal flanges, from the axial bore of the axle bore sections into the stator rotor space of the roller for the supply and removal of a cooling medium.

This measure ensures the cooling of this driven roller, which is required in many cases, be it that the drive must have a high output and therefore a correspondingly high amount of heat must be dissipated, be it that the roller is used, for example, for hot rolling broadband. Air or insulating liquid media such as heat transfer oil are used as the medium.

According to a second embodiment principle, the roller body has a roller shell and a roller axis, the central axis section being designed as a hydraulic drive.

According to a preferred embodiment, for the formation of the hydraulic drive, the central axis section has pistons arranged on a diameter and delimiting pressure chambers with the roller jacket, the pistons being connected to a bolt of the central axis section with connecting rods and between the Roll jacket and the axis section inlet slots and outlet slots are formed with inlet and outlet bores.

These measures drive and cool the roller at the same time.

REPLACEMENT LEAF For rollers with low loads, the object set is achieved in that the roller body has a blind hole on the ends, in which the solid-walled pins are arranged axially displaceably in the blind holes, the pins being connected to the by a splined shaft connection The roller body is in engagement and can be brought into and out of engagement via magnetic coils according to the principle of the splined shaft connection with the pin receptacles rotatably mounted in the roller stand.

In many cases, however, it is necessary not only to cool the roller but also the material to be rolled or the material to be transported.

In a further embodiment of the invention, the roller body consists of the roller shell with the bores opening into the peripheral surface and the axis spaced apart to form the sealed annular gap, the axis having a blind bore on the end faces, in the blind bore the hollow cylindrical pins axially ver¬ are arranged to be slidable, the pins are in engagement with the roller body via a splined shaft connection and can be brought into engagement with the spigot receptacles rotatably mounted in the roll stand according to the principle of the splined shaft connection, the axis terminating in the annular gap at least along the diameter Bore and at least one bore branching axially to the pin, in the axial bore a tube is inserted, which is in accordance with the telescopic principle in engagement with the hollow cylindrical pin - and the hollow cylindrical pin with a tube of the pin receptacle according to de m Telescopic principle can be brought in and out of engagement.

REPLACEMENT LEAF This roller can be used in the textile industry, paper industry, etc. for printing webs by arranging the holes opening into the roller shell according to patterns. It is also possible to assign a roller with correspondingly arranged bores to the different ink areas and to apply the relevant ink via these bores. It is particularly advantageous to arrange a casing perforated in the relevant areas on the roll casing of a plurality of rolls, so that generally a system can be equipped with a roll type and to perforate casings accordingly when changing colors and / or patterns and to pull them onto the roll casings are what can be done quickly by the change according to the invention.

This roller can also be used for shrinking or decating tissue by supplying water or steam to the roller, which emerges through the bores in the lateral surface of the roller and acts on textile webs running over the roller. In this respect, this roller can also be used when there is a lack of laundry, in particular if it still has an electric heater.

The task of quickly changing, adjusting and centering is achieved according to a first solution principle in a rolling mill which in particular has caliber rolls, in that the pairs of rolls assigned to each work station are combined to form a group and which are assigned to the work stations according to a rolling program Pairs of the rollers can be brought into their working position by rotating each group about an axis of rotation common to their roller pairs.

REPLACEMENT LEAF In the sense of the invention, the rolls of the pairs of a roll stand are understood to mean the rolls which cause the rolling stock to deform and at the same time abut the rolling stock from one side, so that in the simplest case a rolling stand has only two rolls.

For the purposes of the invention, the rolls of the pairs also include those rolls of a double duo mill stand, a four-high, six-high, Rohn 12-roll mill, Sendzimir 20-roll mill, Steckel mill, etc., each of one of them two sides stand against the material and bring about the deformation of the material, the further rolls of the stand or rolling mill not being mentioned further below.

For the purposes of the invention, the pairs of rollers are to be understood as meaning only the rollers which are in contact with the material to be rolled (in each case from one of two sides), in the simplest case a pair of rollers having only two rollers and, if appropriate, other rollers present as well the rolls that are working against the material to be rolled do not be mentioned further below.

In the sense of the invention, a work station of a pair of rollers is to be understood as the area in which the rollers which cause the deformation of the rolling stock and at the same time come into contact with the rolling stock from one side, optionally together with the others working rollers for deforming the rolling stock are arranged.

In the sense of the invention, the pairs of rolls assigned to a work station according to a rolling program are understood to mean the deformation of the material to be rolled

REPLACEMENT LEAF effecting and at the same time against the rolling stock (in each case from one of two sides), optionally with the other rollers working with them to deform the rolling stock, these pairs are brought into the working position according to the rolling program in a predetermined order.

In a complete departure from the previous state of the art, when a roll is changed, for example for the subsequent rolling of profiles with a different cross-section, the rolls in the individual work stations in the working position are no longer exchanged for other rolls located in a roll bearing, but rather all, one each Pairs of rollers assigned to the work station are combined to form a group such that, according to a predetermined rolling program, the respective group as a whole is pivoted about a common axis of rotation so that the pair predetermined by the program rotates into the working position and the pair of rollers previously in the working position is rotated from the working position.

The pairs of rollers in a group are in principle arranged on a common rotatable carrier disc on a circle, the axis of rotation of the rotatable carrier disc running through the center of the circle, the roller pairs being arranged in roller receptacles, and the roller receptacles on the respective rotatable carrier Carrier disc are arranged and adjusted so that adjusting or setting up is no longer required when rotating a pair of rollers in its working position.

Since generally the planes in which the nips of the pairs of rollers in the working position are arranged are always perpendicular to the movement plane of the rolling stock in the

REPLACEMENT LEAF work stations concerned, the respective group of pairs of rollers arranged on a circle is rotated about an axis which runs parallel to the plane of movement of the material to be rolled of the work station in question and which, for example, is parallel to the axis of the tubes when tubes are rolled.

The groups can be arranged such that their respective axes of rotation run below the plane of movement of the material to be rolled or above the plane of movement or in the plane of movement of the material to be rolled and also at a distance from the material to be rolled.

In the simplest case, there is a pair of rollers in the working position in each work station. In principle, however, there can be several pairs of rollers in the working position and deform material in each work station, so that to a certain extent each work station has several pairs of rollers working at the same time.

If each group of a work station has n (n greater than 1) pairs of rollers and only one pair of rollers is in the working position in each work station, the rolling program consists of at least n programs, since the rollers generally belong to the different groups any program can be combined.

In general, the rolling program can be created so that the same number of pairs of rollers is in the working position in all workstations and the material to be rolled is deformed. All pairs of rollers are in the horizontal working position As long as the groups generally have n pairs of rollers and m (m less than n) pairs of rollers are in the working position, it is generally possible to wait for the pairs of rollers which are in the idle position in the workstations during operation, against others to exchange and also to carry out an exchange to create a new rolling program.

In all these cases, there is considerable time and cost savings, since the usual downtimes are avoided in most cases, which were mainly due to the long and tedious adjustment and setup times.

Due to the inventive arrangement of the rollers in groups on a circle and the rotation of the rollers of a group into their working position about the common axis of rotation of the rollers of the individual groups running through the center of the circle, the adjustment and setting up is considerably simplified and is carried out when the rollers in question are not currently in the working position, so that, in principle - apart from extreme accidents - the usual interruptions to operation are eliminated.

The task of quickly changing, adjusting and centering is achieved according to a second solution principle in a rolling mill which has in particular caliber rolls in that the pairs of rolls assigned to a work station each form a group of top rolls and a group of each Bottom rollers are combined and assigned to the work stations according to a rolling program

REPLACEMENT LEAF Neten top rollers and bottom rollers can be brought into their working position by rotating each group about an axis of rotation common to their rollers.

These measures ensure that, in the simplest case, two groups with the top rollers or the bottom rollers take the place of the group with pairs of rollers, so that in the simplest case there are two groups of rollers, with a corresponding rotation of the two groups one group (top or bottom roller) are brought into the working position with a roller of the other group (bottom or top roller) to form a pair of rollers, which then abut the material to be rolled from one side. Working position is rotated.

In general, several groups can be arranged in such a way that several pairs of rollers in the working position are formed, so that at one workstation several of these roller stands take the place of a conventional rolling stand with two rollers standing against the material to be rolled .

According to a first embodiment principle of the first solution principle, the pairs of rolls are each arranged in a roll holder, the center line of the roll nips in each case running on a straight line passing through the axis of rotation, the roll holder being arranged on (in) a carrier disk rotatable about the axis of rotation, the roll receptacles are arranged to be displaceable and lockable on (in) the rotatable carrier disc in the direction of the center line of their roll gaps and the rotatable carrier disc has openings in the region of the roll gap.

HE ^SAT ZBLATT Through these measures, an easy and quick adjustment of the roller pairs with respect to the working position to be taken is achieved in advance by adjusting the roller receptacles on the rotatable carrier disc, which is aligned and locked with its axis of rotation during assembly of the rolling mill to the direction of movement become.

This easy and quick adjustment of the roller pairs in relation to the working position to be taken is achieved in a second embodiment of the first solution principle, which is characterized in that the pairs of rollers are each arranged in a roller holder, the center line of the nips each perpendicular to one through the The straight axis of rotation runs, the roller holder is arranged on (in) one around the axis of rotation of the rotatable carrier disc, the roller holder is arranged in each case in the direction of the center line of its roll nips on (in) the rotatable carrier disc and are arranged to be lockable, and the rotatable carrier disc in the region of the roller gap Has breakthroughs.

This task of quickly changing, adjusting and centering is carried out in a rolling mill, in particular a tube rolling mill, which in particular has caliber rolls, is achieved in such a way that the pairs of rolls are each arranged in one roll holder, the roll holders in each case divided rectangular plate can be moved and locked, the divided rectangular plate has a circular dovetail turn and is rotatably engaged with the roller bearing via a worm gear.

These measures on the one hand achieve an independent linear adjustment of the top rollers and bottom rollers with respect to the roll gap, on the other hand the top

ER ^S ATZBLATT and the lower rollers are rotated in pairs, so that the nips of the rollers in the working position are height-adjustable relative to one another and additionally rotatable relative to one another. These measures in tube rolling mills ensure that the previous undulating course of the strip edges in front of the welding point is avoided by giving the tube to be formed a curvature with respect to its axial direction, which results in an undulating course of the edges.

In a further embodiment of the invention, the material-deforming rollers are used, the roller bodies of which are axially displaceable on the pins locked in the pin receptacles, or whose roller bodies, including the pins, are axially displaceable in the pin receptacles.

These measures result in advantageous methods for regulating or controlling the edge profile of strips _r profiles and, moreover, regulating methods if these roller pairs are additionally arranged such that they can be adjusted in height.

The method for controlling or regulating the edge course of strips is characterized in that when the center of the strip deviates from the center of the roll train at at least one work station, the deviation is detected by scanning at least one strip edge and the signal representing the deviation (setpoint Actual value difference) of an adjusting device (actuator) for roller bodies axially displaceable on its journal or rollers axially displaceable in the journal receptacles of the next work station following in the direction of passage. In the same way, the control or regulation of the passage of profiles through roller mills is achieved in that when the distance of the edge of the profile from a predetermined reference line at (in) at least one work station changes, the deviation by scanning the edge of the profile is recorded and the signal representing the deviation (setpoint / actual value difference) is fed to an adjusting device (actuator) for the roller bodies axially adjustable on its journal or rollers axially displaceable in the journal receptacles of the work station in front of it in the direction of flow.

The object of creating a method for controlling or regulating the edge profile of strips to be deformed into pipes is achieved in that in the region of the strip deformed from its plane at least one strip extending over the strip edges and one parallel to the direction of flow of the strip to be deformed Belt running axis pivotable feeler roller, the deviation of the edges from a predetermined course is detected and the setpoint-actual value difference of the deviation is fed to a work station arranged against the direction of travel of the tube in front of the welding point with a rotatable pair of rollers.

In a further embodiment of this method, the ripple of the edges is recorded inductively and the signal representing the ripple is fed as a setpoint / actual value difference to a work station arranged against the direction of travel of the pipe in front of the welding point with a height-adjustable roller pair for corresponding adjustment of the roller pair. In principle, the carrier disks can be arranged on an axis made of solid material. In this case, the rollers and / or the drives on the carrier disks must be supplied with hydraulic working fluid and electrical energy with lines which are laid along the carrier disks and outside their swivel radius.

However, in cases in which a large number of carrier disks are arranged one behind the other and the rollers or roller pairs located on the carrier disks are all in the working position, this leads to considerable expenditure, and the accessibility of the individual work stations is also made considerably more difficult.

In a further embodiment of the invention the Ausbil¬ is dung therefore made so _^ that each carrier disc has a coaxial hollow axle and in the coaxial hollow axle hydraulic lines and / or cooling medium lines and / or electric cables for the rollers and / or the drives on the carrier disc are arranged. These measures generally ensure free access to the rolls or pairs of rolls and to the drives on the individual carrier disks.

According to a preferred embodiment, the hydraulic lines and / or the coolant lines and / or the electrical lines have couplings for lines which lead through openings in the coaxial hollow axis to the rollers and / or the drives. These couplings are known per se. When the couplings are released, valves automatically prevent hydraulic work fluid and / or coolant from escaping from the lines, each in

REPLACEMENT LEAF the coupling parts of the couplings are arranged, the one coupling part being non-detachably connected to the line and the other coupling part being connected to the corresponding hydraulic or coolant line in the coaxial hollow axis.

So that several carrier disks with a coaxial hollow axis can easily form a functional unit in this way, the hydraulic lines and / or the coolant lines and / or the electrical lines of a coaxial hollow axis have couplings for the hydraulic lines and / or cooling in a further embodiment of the invention center lines and / or electrical lines of the adjoining coaxial hollow axes, the releasable couplings being accessible from the area of the end faces of the carrier disks. These measures also create a modular principle that allows a quick and safe exchange of carrier disks together with their coaxial hollow axis. In principle, the coaxial hollow axes of the two end carrier disks on their side facing away from the adjacent carrier disk have known rotary couplings for the connecting lines.

According to a further embodiment principle, the hollow coaxial axis, with tubes arranged coaxially in it, delimits annular spaces for the supply and return of hydraulic working fluid and / or coolant.

In this case, lines with the quick couplings mentioned lead to these annular spaces. In the simplest case, three tubes are arranged concentrically in the coaxial hollow axis, forming two annular spaces, one annular space for the supply of hydraulic fluid or one Coolant and the other annulus serves the return, while the inner tube also serves as a cable duct for the electrical supply lines.

In general, in cases where the supply and return of hydraulic working fluid and / or coolant outside the axis to the rollers or pairs of rollers and the drives on the individual carrier disks, the inner tube or the coaxial hollow axis can be united Form cable duct for the electrical lines leading to the rollers and / or the drives.

In a still further embodiment of the invention, the coaxial hollow axes of the carrier disks have coupling flanges on the end face to form a composite unit. These measures result in considerable simplifications when the carrier disks are rotated into a different working position, for example if the carrier disks are designed such that, for example, only the roller pairs or rollers located in the upper or lower apex are in the working position.

In a still further embodiment of the invention, the coaxial hollow axes are mounted in mutually adjustable stands, so that after the alignment of the carrier disks in their stands to form, for example, a rolling mill, only the stands have to be aligned with one another, as a result of which the setting times are considerably reduced. This also applies in cases where the carrier disks have coaxial hollow axes which are flanged together only after the uprights have been aligned with one another.

REPLACEMENT LEAF In a further embodiment of the invention, the stands have stepper motors for rotating the carrier disks.

As already explained above, the Wal zen or. the carrier disks with the inventive Wal zen or. Wal zenpaare and the drives for pipe rolling mills are provided. To date, tube rolling mills have the serious disadvantage that the removal of the weld seam elevation takes place on the inner wall and / or on the outer wall of the welded tubes with planing devices.

Apart from the short stand times of these facilities, there is the serious disadvantage that chips often block or interrupt rapid production.

In order that the advantages of the rolls or carrier disks according to the invention can be used with the rolls according to the invention without these disadvantages, tube rolling mills are characterized in a further embodiment of the invention in that a tube of a work station is immersed in the tube to be welded with a longitudinal seam, the tube is supported with at least one pressure roller on the weld to be smoothed, elevation on the inner wall and / or the work station is supported on the outer wall with at least one further pressure roller on the weld to be smoothed, and a device for inducting between the pressure roller and the welding point heating of the weld seams.

These measures of smoothing the weld seams can of course also be carried out in the known tube wholes for tubes with a spiral seam.

REPLACEMENT LEAF The invention is explained in the drawing using exemplary embodiments.

Show it:

FIG. 1 shows an axial section through a first embodiment with a roll stand shown in the detail,

FIG. 2 shows an axial section through a second embodiment with a roll stand shown in the detail,

FIG. 3 shows an axial section through a third exemplary embodiment with a roll stand shown in the detail,

FIG. 4 shows an adjusting device in the axial section,

FIG. 5 shows an exemplary embodiment of an electrically driven roller in axial section,

FIG. 6 shows an exemplary embodiment of an electrically driven, cooled roller in axial section,

7a, 7b in axial section an exemplary embodiment of a hydraulically driven roller,

FIG. 8 in axial section an embodiment of a roller with magnetically coupled pins,

FIG. 9 shows, in axial section, an exemplary embodiment of a roller with pins coupled via compression springs,

REPLACEMENT LEAF Figure 10 in axial section a further embodiment of a cooled roller and

Figure 11 in axial section a simple embodiment of a roller.

FIGS. 12-30 exemplary embodiments of the rotatable carrier disk, for the adjustable arrangement of the roller pairs for the methods, further exemplary embodiments and applications of the invention.

FIG. 1 shows a first exemplary embodiment for the first solution principle.

The roller body 1 has an axially continuous bore 2 and the two pins 3 and 4.

An axis 5, which has the three axis sections 6, 7, and 8, is arranged coaxially with the through bore.

The roller body is non-positively and positively connected to the central axis section 7 via feather keys 9, only one of which is shown.

The outer diameter of the central axis section is equal to the inner diameter of the axially continuous bore.

The two pins 3 and 4 are hollow cylindrical bodies, each consisting of two sections 11 (outer section) and 12 (inner section) or 13 (outer section) and 14 (inner section).

REPLACEMENT LEAF The two outer sections 11 and 13 have a smaller outer diameter than the two inner sections 12 and 13, forming an annular end face 15 and 16, respectively.

When changing the roller, the free end faces 17 and 18 of the pins run in the plane of the end face 19 and 20 of the adjusting rings of the roller body or at a distance from this end face more in the direction of the central axis section. In Figure 1, the pin 3 has this position, while the pin 4 shows the end position of a pin in its pin holder after a roll change.

The roll stand is shown only in the cutout of the two roll stands 21 and 21 'with the area of the two bearings 23 and 24 for the pins 3 and 4. The distance between the two roll stands is greater than the axial length of the roll, i.e. of the roller body including the thickness of the two adjusting rings 34 and 35.

The inner section 12 or 14 of the hollow cylindrical pins is in engagement with the inner wall of the continuous axial bore via a helical thread 25 or 26.

The bearings have the pin receptacle 27 and 28 for the outer section 11 and 13 of the hollow cylindrical pin.

The peg receptacle 27 can be brought into and out of engagement with the outer section 11 of the peg 3 via a splined shaft connection 29 and the peg receptacle 28 with the outer section 11 of the peg 4 via a splined shaft connection 30.

REPLACEMENT LEAF A splined shaft connection 29 'is furthermore formed between the pin 3 and the axle section 8, a splined shaft connection 30' is also formed between the pin 4 and the axle section 6.

In Figure 1, the outer portion 11 and the receptacle 27 are shown in engagement, the outer section 13 and the receptacle 28 are disengaged.

The two end faces of the roller body each have a ring recess 31 of dovetail cross-section, in each of which an annular body 32 is inserted and clamped with a clamping ring 33 in such a way that the ring body can only be rotated with the appropriate effort.

The ring body 32 plunge into a groove of the adjusting ring 34 or 35 on the relevant end face of the roller body and are screwed to them.

The same multi-spline connection 29 or 30 is formed between the adjusting ring 34 or 35 and the outer section 11 or 13 of the pin 3 or 4 as between the outer section 11 or 13 and the pin receptacle 27 or 28.

The adjusting rings form stop surfaces for the annular end face 15 or 16 of the pin 3 or 4.

The adjusting rings and the roller bodies have blind holes 36 and 37, into which hook or bolt wrenches (not shown) are inserted in order to

REPLACEMENT LEAF Change the adjustment rings on the roller body to twist so that the pins can be brought into and out of engagement with the receptacles.

When changing the roll, the roll is first supported by the maintenance personnel by hand or with a changing device. When the roller body is stationary, the adjusting rings are rotated in the direction with the hook or bolt wrenches in such a way that the two pins assume the position of the pin 4 in FIG. 1 and are out of engagement with the pin receptacles. The roller can then be changed to another.

Of course, the roller body can be rotated against the adjusting rings.

The adjusting rings and the roller body can also be rotated in opposite directions to one another.

After installation, the pins of the roller can be locked in the receptacles using screw bolts, for example.

FIG. 2 shows a second exemplary embodiment in the representation of FIG. 1. The two pins are adjusted axially hydraulically.

The roller body 41 has an axially continuous bore (42) and the two pins 43 and 44.

An axis 45, which has the three axis sections 46, 47, and 48, is arranged coaxially with the through bore.

ERS ^A TZBLATT The roller body is non-positively and positively connected to the central axis section 47 via feather keys 49, only one of which is shown.

The outside diameter of the central axis section is equal to the inside diameter of the axially continuous bore.

The two pins 43 and 44 are hollow-cylindrical bodies, each consisting of two sections 51 (outer section) and 52 (inner section) or 53 (outer section) and 54 (inner section).

Due to the formation of an annular end face 55 and 56, the two outer axle sections 51 and 53 have a smaller outer diameter than the two inner axle sections 52 and 54.

When the roll is changed, its free end faces 57 and 58 run in the plane of the end face 59 and 60 of the end-side annular disk 76 and 77 of the roller body or at a distance from these end faces more in the direction of the central axis section in the end position of the pins shown .

The roll stand is only shown in the area of the two bearings 63 and 64 for the pin 43 and 44 in the cutout. The distance between the two bearings is greater than the axial length of the roller, i.e. of the roller body including the thickness of the two end-side ring disks 76 and 77. It is possible to predefine any play between the bearings 63 and 64 and the ring disks 76 and 77.

REPLACEMENT LEAF The inner section 52 of the hollow cylindrical pin 43 has the function of a piston which can be acted upon hydraulically on both sides and which limits the pressure spaces 65 and 65 'with the roller body 41, the central axis section 47, the annular disk 76 and the axis section 48.

The inner section 54 of the hollow cylindrical pin 44 also has the function of a piston which can be acted upon hydraulically on both sides and which, with the roller body 41, delimits the pressure chambers 66 and 66 'with the central axis section 47, the annular disk 77 and the axis section 56.

The bearing 63 or 64 has the pin receptacle 67 or 68 for the outer section 51 or 53 of the hollow cylindrical pin. These outer sections of the pins each have the function of a coupling member and a piston rod.

The pin receptacle 67 consists of a cylindrical housing 67 'with a coaxial cylindrical section 69 which is aligned with the axle section 48 and which delimits an annular space 73 with the cylindrical housing.

The pin receptacle 68 consists of a cylindrical housing 68 'with a coaxial cylindrical section 70 which is aligned with the axis section 46 and which delimits an annular space 71 with the cylindrical housing.

An annular disk 76 and 77, respectively, is arranged on the end faces 74 and 75 of the roller body.

REPLACEMENT LEAF Between the hollow cylindrical pin 43, ie its sections 51 and 52, and the outer axis section 48, a splined shaft connection 78 is formed, with which the pin is always in engagement.

Between the pin 44, i.e. its sections 53 and 54, and the outer axle section 46 is formed a splined shaft connection 79 with which the pin 44 is always in engagement.

Between the pin 43 and the coaxial cylindrical section 69, the splined shaft connection 78 is also formed, with which the pin can be brought into and out of engagement.

Furthermore, a splined shaft connection 79 is formed between the pin 44 and the coaxial cylindrical section 70, with which the pin can be brought into and out of engagement.

For this purpose, the roller body 41 has a bore 80 with the bore sections 81, 82, 83 and 84, of which the bore section 82 or 83 opens into the pressure chamber 66 'or 65 and the bore section 84 can be closed with a quick-release fastener 85.

Furthermore, the roller body has a bore 86 with the bore sections 87, 88 89 and 90, of which the bore section 88 or 89 opens into the pressure chamber 66 or 65 'and the bore section 90 has a quick-release fastener 91. In the position of the pins shown in FIG. 2, the pressure spaces 65 and 66 are acted upon and the pressure spaces 65 'and 66' are relieved, the quick-release fasteners being open. The pins are in the position for the roller change.

After the roll change, the pressure chambers 65 'and 66' are loaded and the pressure chambers 65 and 66 are relieved. As soon as the pins in the pin receptacles have reached the end position (cf. the position of the pin 4 in FIG. 1), the quick-release fasteners are switched to the locked position. The roller is then ready for use.

In the rollers according to FIGS. 1 and 2, the roller bodies with the pins are changed.

In the illustration in FIG. 2, FIG. 3 shows an exemplary embodiment of the solution principle according to which the roll body is changed when the roll is changed and the pins remain in the pin receptacles of the roll stands.

The roller body 101 has an axially continuous bore 102 and the two pins 103 and 104.

An axis 105, which has the three axis sections 106, 107, and 108, is arranged coaxially with the through bore.

The roller body is non-positively and positively connected to the central axis section 107 via feather keys 109, only one of which is shown.

The outside diameter of the middle axis section is equal to the inside diameter of the middle section of the axially continuous bore.

ERS _AT ZBLATT The two pins 103 and 104 are hollow cylindrical bodies, each consisting of two sections 111 (inner section) and 112 (outer section) or 113 (inner section) and 114 (outer section).

Sections 112 and 114 each have the function of a piston rod and a coupling member, while sections 111 and 113 each have the function of a hydraulic piston.

Due to the formation of an annular end face 115 and 116, the two inner axle sections 111 and 113 have a larger outer diameter than the two outer axle sections 112 and 114.

The roll stand is shown in the area of the two pin receptacles for the pins 103 and 104, specifically in the cutout of the two stand columns 121 and 122. The length of the roller body is less than the mutual distance between the two stand frames (any size, predeterminable play).

The two pin receptacles 123 and 124 are rotatably mounted in the bearings 121 'and 122' of the scaffold stand.

The pin receptacle 123 consists of a cylindrical housing 125 and a pin flange 126 with a screwed-on multi-spline pin 127, which limits an annular space in the axial direction with the housing.

REPLACEMENT LEAF In the direction of the roller body, the housing has a housing base 128 with a coaxial bore, through which the portion 112 of the pin projects in all its positions and is sealed by means of seals that are not numbered.

Between the journal flange 126 and the housing bottom 128, the hollow cylindrical journal 103 is slidably arranged on the splined shaft assembly 127.

The inner section 111, which is a piston that can be acted upon on both sides and is sealed against the housing with seals that are not numbered, divides the annular space delimited in the axial direction by the housing and the coaxial multi-spline pin into the two hydraulically actuatable cylinder spaces 131 and 132.

The journal flange and the housing base of the journal receptacle form stops for the two end positions of the hollow-cylindrical journal 103, the outer section of which projects beyond the housing base in all positions of the journal or extends with its end face 133 in the plane of the housing base (position for changing the Roller body).

Between the pin 103, i.e. its sections 111 and 112 and the multi-spline pin 127 is formed a multi-spline shaft connection 134, with which the pin is always in engagement via its inner section 111.

Between the pin 103 and the outer axle section 108 is also formed the splined shaft connection 134, with which the outer section 133 of the pin can be brought into and out of engagement (out of engagement when changing the roll).

REPLACEMENT LEAF The stepped ring body 98 is arranged in the end face of the roller body which points towards the pin receptacle, which delimits an unnumbered annular gap with the outer axis section 108 and which also has a circumferential end face 136 which the stop for the pin after changing the roller body is.

The bore 138 running in the housing leads to the pressure chamber 131, while the bore 139 leads to the pressure chamber 132, via which the pressure chambers are acted upon or relieved of hydraulic working fluid. The pressure chambers have a check valve 138 'or 139'.

The pin receptacle 124 mounted in the scaffold stand has the same design as the pin receptacle 123. The same parts are therefore labeled with the same reference numerals.

For a roll change, the roll body is supported, the check valves are opened, the pressure chambers 131 are relieved and the pressure chambers 132 are acted upon. The pins move into their position on the pin flanges. After changing the roller body, the pressure chambers 131 are loaded and the pressure chambers 131 are relieved. As soon as the pins have reached their end position on the annular end faces 136, the check valves are closed.

FIG. 4 shows an exemplary embodiment of a mechanical adjusting device for a roll during the rolling process. In addition to the exemplary embodiment shown in FIG. 2, which is shown in the detail, the exemplary embodiment has the adjusting device 140 flanged to the scaffold stand 121. The same parts are labeled with the same reference numerals.

REPLACEMENT LEAF In the housing 140 of the adjusting device, a worm 141 is rotatably mounted perpendicular to the plane of the drawing and engages with a worm wheel 142. The worm wheel has a trapezoidal thread 142 ′ on its inner circumference and is in engagement with an intermediate ring 143. As soon as the worm is turned, the intermediate ring is turned and at the same time moved axially. An inner ring 144 is in engagement with the intermediate ring and has tension and compression bolts 144 ′, which are guided through bores in the bearing housing 145 of the radial bearing 63 and are connected to the housing 145 ′ of the pressure bearing 145 ″. This housing 145 'is arranged coaxially to the housing of the pin receptacle. When adjusting the screw, the roller body together with the pin is axially displaced as a structural unit. For this purpose, an axial play is formed between the end faces of the pins and the pin receptacles (designated by a in FIG. 4).

As soon as the blocking valves of the roller body are switched into the blocking position, when the spindle is rotated in one direction or the other, the roller body with its two pins in the two roller receptacles is displaced in the axial direction by a maximum of the amount a shown in FIG.

FIG. 5 shows an exemplary embodiment of a roller with an electrical drive integrated in the roller. It is a further development of the embodiment shown in FIG. 3.

While in FIG. 3 the pin receptacles 123 and 124 are rotatably mounted in the roll stands, in FIG. 5 the pin receptacles labeled 150 and 151 are in the roll stands

ER _S ATZBLATT 121 and 122 of the roll stand are arranged stationary and the roll body 152 is rotatably mounted on the axis designated 153.

The other parts that are the same as in FIG. 3 are identified by the same reference numerals.

The axis 153 consists of the central axis section 154, to which the axis sections 155 and 156 connect in the direction of the pin receptacle 150 and 151, respectively.

The middle axis section has pole shoes 157 arranged in a not numbered groove, on which the stator windings 158 are arranged.

The roller body 152 has a continuous axial bore from a central section 161, and an outer section which is not numbered and adjoins in the direction of the pin receptacle 150 or 151.

The middle section of the continuous axial bore carries the pole shoes 159 with the rotor icklungen 160 on the inner wall. The other electrical components are known per se and are therefore not shown. The same applies to the electrical connections that are routed through the axis via couplings.

Groove seals 161 are arranged on the axis sections 155 and 156 on both sides of the windings. The annular bodies 98 abut against the end faces of the axis sections 155 and 156. The bearings 163 are arranged between these ring bodies and the roller body 152.

_E RS _AT ZBLATT These measures create a compact, quickly replaceable roller with an integrated electric drive that is easy to maintain.

In a further development of the exemplary embodiment in FIG. 5, FIG. 6 shows an exemplary embodiment of a cooled roller with an electric drive. The same parts as in FIG. 5 are identified by the same reference numerals.

In contrast to the exemplary embodiments in FIGS. 3 and 5, the journal flanges with their splined shaft journals are designed as hollow cylindrical bodies and are therefore designated 170, 171.

The hollow cylindrical multi-spline shaft 171 guides the piston rod 172 of a piston 173 that can be hydraulically actuated on both sides. The pressure spaces 174 and 175 are formed on both sides of the piston 1 73. The bores 176 and 177 opening into these pressure chambers each have a sper valve 178 and 179, respectively. The piston rod and the piston are each hollow cylindrical and work according to the telescopic principle with a tube 180 which is screwed into the pin flange 170 and connected to a coolant inflow.

The piston and the piston rod form a coupling element with the axial bore 1 81 of the axis. From this axial bore holes 181 'open into the lateral surface of the central section of the axis.

The piston rod, with its free conical end face 182 having seals, dips into a complementary area of the bore 181 in the axis section 155.

REPLACEMENT LEAF The journal flange in the roll stand 121 is designed in the same way as that in the roll stand 120. The same parts are therefore labeled with the same reference numerals. While coolant is supplied via one pipe 180, it is discharged via the other pipe 180 after flowing through the roller or vice versa.

Before changing the roll, the coolant is drained off through one of the two pipes, then the two pistons are put into theirs

Move the end position on the flanges. The roller is then changed as in FIG. 5.

FIGS. 7a and 7b show, in a further development of the exemplary embodiment in FIG. 6, an exemplary embodiment of a cooled roller with a hydraulic drive. The same parts as in FIG. 6 are identified by the same reference numerals.

The roller body 185 with the hydraulic drive 186 takes the place of the roller body with the cooled electric drive.

The roller body consists of the roller jacket 187 and a roller axis, the central portion 188 of which has the hydraulic drive.

An independent roller stub 180 ″ adjoins the middle roller section in the direction of the pin receptacles 150, between which and the roller body 185 a bearing 180 ″ ″ is arranged, so that the roller body, together with the hydraulic drive, stubs on the stationary roller stubs is rotatably mounted.

REPLACEMENT LEAF According to FIG. 7b, the central axis section of the roller axis 188 has the two hydraulic pistons 189 and 190, opposite one another on a diameter, which each delimit the pressure spaces 11 and 192 with the roller shell. The pistons are each supported by a connecting rod 193 or 194 on a pin 195 of the central axis section.

Between the roll shell and the middle roll section, inlet slots 196 and outlet slots 197 are formed with inlet bores 198 and outlet bores 199 for the hydraulic medium, which lead to the inlet slots 196 via a coupling element 172, 173, the bore 181, and further bores, not shown fed and is led away via the drain slots 197, the other coupling element 172, 173, the other hole 181, other further holes, not shown. A roll change is carried out as in FIG. 6.

FIG. 8 shows, in a modification of the exemplary embodiment in FIG. 1, the exemplary embodiment of a roller, the pin of which can be moved electromagnetically.

Parts identical to those in FIG. 1 are identified by the same reference numerals.

The roller body 200 has two blind hole-like axial bores 201 and 202, in which, in contrast to the hollow-cylindrical pins 3 and 4 of FIG. 1, the solid-walled pins 203 and 204 are arranged so as to be axially displaceable, which instead of over the body a high helix thread is engaged via a splined shaft connection 29 or 30.

REPLACEMENT LEAF The bottom of the pocket holes each has an electromagnet 205, the flanges 206 of the pin receptacles 27 and 28 also each have an electromagnet 207. Instead of the adjusting rings 34 and 35 (FIG. 1), the roller body 200 has two fixed ring plates 208 as stops for the pins.

The electrical lines to the electromagnets are not shown. By appropriately energizing the electromagnets, the pins are brought into or out of engagement with the pin receptacles, so that the roller, as described in FIG. 1, can be replaced.

FIG. 9 shows a further exemplary embodiment of a roller with two full-walled journals, which is a further development of the exemplary embodiments of FIGS. 1 and 8.

Parts corresponding to FIGS. 1 and 8 are identified by the same reference numerals.

The roller body has the end adjustment rings 34 and 35.

A compression spring 209 is arranged between the pins and the respective bottom of the borehole.

With a corresponding rotation of the adjusting rings, the pins engage or disengage from the pin receptacles.

FIG. 10 shows an exemplary embodiment of a cooled roller or a pressure roller, the roller body 210 of which has two axial bores 211 in the manner of a hole for the pins.

ER _S ATZ _BLA TT This exemplary embodiment is a further development of the exemplary embodiments in FIGS. 1 and 8. The same parts are identified by the same reference numerals.

The roller body consists of the roller jacket 212 with the bores 213 and, with the formation of the sealed annular gap 214, is arranged at a distance from the roller axis 215, which has the two shank-like bores.

As in FIG. 1, the blind-hole-like bores carry the pins designated 216 and 217, which are designed as hollow cylindrical bodies and can be brought into or out of engagement with the pin receptacles.

The axis has a bore 218 running along a diameter, which opens into the annular gap and from which an axially extending bore 219 branches off in the direction of the one pin, into which a tube 220 is inserted, which with the hollow cylindrical pin according to the telescopic principle in FIG Intervention stands.

The flange 221 of the one pin receptacle has a tube designated by 222, which can be brought into or out of engagement with the hollow cylindrical pin according to the telescopic principle. The drive takes place via the other pin. If the roller is not driven, the medium can be fed through both pins.

The roller is changed as in FIG. 1, the pins coming out of or in engagement with the pin receptacles and the tube (FIG. 10 right side or left side).

REPLACEMENT LEAF FIG. 11 shows a detail of a roller 225 with pins 227 which are axially displaceably guided in the receptacles 226 and which is used, for example, as a winding shaft in the paper industry and which is shown only in the area of the roller stand 121 due to its symmetrical design.

The axially displaceable pin 225 can be brought into and out of engagement with the roller body of the roller 225 via a splined shaft connection 228.

It engages with the pin receptacle 225 arranged in the bearing 229 via a trapezoidal thread 231 according to the principle of nut and screw, and its end section extends beyond the pin receptacle, which has an adjusting disk 232.

When the pin receptacle is held in place and the adjusting disk is rotated accordingly, the pin is brought into or out of engagement with the roller body. As shown, the roller can be driven by a worm drive 232.

The roller, the pin and the pin receptacle are designed accordingly in the section not shown.

The statements apply to driven and non-driven rolls. In the first case, at least one pin receptacle may have a flange for a drive. These statements generally apply to driven and non-driven rollers.

REPLACEMENT LEAF FIG. 12 shows, perpendicular to the direction of passage and perpendicular to the plane of the drawing of the material to be rolled, schematically a first exemplary embodiment of a group of pairs of profile rolls arranged on a rotatable carrier disk.

A pair of profile rollers 240 ^ 240 ₂ , 240 ₃ , 240 ₄ , 240 ₅ , and 240 _g , is arranged in or on a roller holder 241, and forms a displaceable and possibly rotatable structural unit with the roller holder, which is a drive for each roller 242.

The roll gaps 243 each run perpendicular to the straight lines passing through the axis of rotation, which run parallel to the axes of the rolls.

In the direction of this straight line passing through the axis of rotation, the structural units can be displaced and locked in guides (not shown) of the rotatable carrier disk designated by 244.

The rotatable carrier disk has openings 245 in the area of the roll gaps for the material to be rolled and passing perpendicular to the plane of the drawing.

The rotatable carrier disk is rotatably mounted in a stand, not shown, about its axis of rotation 246, to which the structural units are arranged on a circle of radius R, so that the center of the circle coincides with the axis of rotation (the radius is in each case related to the center of the roll gap) [Figure 12]).

_REPLACEMENT Z _B LATT In FIG. 12, the pair of rollers 240 is in the working position, while the other pairs of rollers are in the rest position.

The rollers shown are used to manufacture tubes from strip material. For this purpose, a plurality of rotatable carrier disks are arranged one behind the other perpendicular to the plane of the drawing (FIG. 18), the uppermost pair of rollers 240 being in the working position and the successive pairs of rollers 240 in the plane of the drawing correspondingly profiling the rotatable carrier disks arranged one behind the other 17 and 18, the two edges of the band 252 (FIG. 16) formed into a tube 251 are butt-welded together in the welding point 248 shown in FIGS.

The other pairs of profile rollers 240_ assigned to one another serve accordingly. , etc. of the successive rotatable carrier disc for the production of profiles (Figure 18).

It is readily possible to design the roller pairs of a rotatable carrier disk identically and then to form tubes simultaneously with the top and bottom roller pairs 240 and 240, for example.

Correspondingly, six identical or different profiles or tubes can also be produced simultaneously with the exemplary embodiment in FIG.

FIG. 13 shows a modification of the embodiment shown in FIG. 12 in the illustration in FIG.

REPLACEMENT LEAF The rollers do not have their own drive. A drive 253 is provided for the structural unit rotated into the working position and can be coupled to the structural unit rotated into the working position via a splined shaft connection 254.

FIG. 14 shows in the representation of FIGS. 12 and 13 the pairs of rollers assigned to a work station, which are each combined to form a group of top rollers 255 and in each case a group of bottom rollers 256 and which, after a rolling program, are rotated by rotating each group by one common axis of rotation 257 or 258 can be brought into their working position 259.

The top rollers and the bottom rollers are arranged in roller mounts in the same way as in FIGS. 12 and 13; the details are explained in FIGS. 17 and 18.

The arrangement of the roller receptacles on (in) the rotatable carrier disks is such that an upper roller and a lower roller can be rotated by rotating the two rotatable carrier disks to form the pair of rollers in the working position and delimiting the nip, the arrangement or the formation of the two rotatable carrier disks is such that they limit a breakthrough 260 in the area of the roll gap for the material to be rolled (FIG. 17).

The roller mounts can be moved correspondingly as in FIGS. 12 and 13.

The top rollers and the bottom rollers each have their own drive 261 and 262, respectively.

REPLACEMENT LEAF FIG. 15 shows a development of the exemplary embodiments shown in FIGS. 12 and 13, in that the roller receptacles are additionally arranged in the rotatable carrier disk so as to be rotatable about axes perpendicular to the plane of the drawing.

This rotatability is shown schematically in FIG. 15 for the one roller holder by the circle 264. The displaceability of the roller mounts according to FIGS. 12 and 13 is shown schematically by the double arrows (the arrangement of the roller mounts can also be such that they can only be rotated in the rotatable carrier disks).

This arrangement of rolls on or in the rotatable carrier disks rotatable roll receptacles is particularly advantageous for stretch-reducing roll mills, the rolls of which are combined into tripein (cf. FIG. 23).

In the case of tube rolling mills in particular, it is advantageous, as explained further below, to arrange the roller receptacles in a displaceable and rotatable manner in or on the rotatable carrier disks.

FIGS. 16 and 17 show an exemplary embodiment of the roller receptacles shown schematically in FIG. 15, which can be displaced and locked in two mutually perpendicular directions on the rotatable carrier disk and which are additionally rotatable.

FIG. 16 shows a top view of the upper work station in FIG. 12 in the direction of arrow a.

FIG. 16 shows the rotatable carrier disk 244 in a view and in partial section; FIG. 17 shows section A B from FIG. 16.

REPLACEMENT LEAF The roller holder 241 consists of a divided rectangular plate 265, which can be adjusted in FIG. 16 perpendicularly to the plane of the drawing via the worm drive 266 (see FIG. 17).

The divided rectangular plate has a circular serrated tail indentation 266 ', by means of which it is rotatably engaged with the roller bearing 267 (FIG. 18).

The rollers are axially displaceable in the roller bearing, i.e. arranged controllable, as can be seen, for example, from FIGS. 3, 4 and 5.

In order to change the roll gap height, the upper roll in the roll holder is arranged so as to be adjustable via the spindle 268 or 269.

The roller bearing 267 in the rectangular plate is rotated by means of the worm drive 270 (FIG. 18).

FIG. 18 shows a side view of a tube rolling mill with a plurality of rotatable carrier disks, the roller pairs of which are arranged according to FIGS. 16 and 17. In addition, the mutual distance 1 of the rotatable carrier disks can be changed. The direction of passage of the strip to be deformed into a tube is shown by the direction of the arrow.

For aligning the rotatable carrier disks, their axes each have a central axial bore 254, so that an exact alignment is carried out by means of a laser beam to be guided through all the bores.

REPLACEMENT LEAF FIGS. 19 to 22 show exemplary embodiments for the mutual arrangement of several rows of rotatable carrier disks.

FIG. 23 shows an example of the universal uses of the rotatable carrier disks.

Because the roller bodies according to the invention are axially displaceable on their journals locked in the roller receptacles or the rollers with their journals in the journal receptacles, as is shown, for example, in FIGS. 3, 4 and 5, the edge course is controlled or regulated according to the invention of strips as they pass through the roll gaps delimited by the rolls according to the invention in such a way that when the center of the strip deviates from the center of the roll train at at least one work station, the deviation is detected by scanning at least one strip edge and the signal representing the deviation (setpoint Actual value difference) of an adjusting device (actuator) for the roller bodies axially displaceable on its journal or for the rollers axially displaceable in its journal receptacles is fed to one of the next work stations following in the direction of passage.

Correspondingly, the control or regulation of the profiles passing through the roll gaps, which have at least one straight edge, takes place in such a way that when the distance of the edge of the profile changes from a predetermined reference line at (in) at least one work station, the Deviation is detected by scanning the edge of the profile and the signal representing the deviation (setpoint-actual value difference) of an adjusting device (actuator) for those axially adjustable on its pin

REPLACEMENT LEAF Roll cores or the rollers axially adjustable in the pin receptacles are fed to the previous work station in the direction of passage.

The regulation and control of the edge course of flat strips and pipes is explained with reference to FIGS. 16 and 17.

Rotary encoders with their rollers, which are designated by 271 in FIGS. 16 and 17, act as actual value receivers against the edges of the flat belt.

The different deflection of the rollers is a measure of the deviation of the course of the two edges of the belt from the center line (target line) 272 of the belt ideally passing through the work stations.

Correspondingly, optoelectronic scanning and the like of the course of the strip edges can also take place.

As soon as a deviation (setpoint-actual value difference) is measured at a work station, a command to control the deviation is given to the rollers, for example the work station preceding in the direction of travel. The roll bodies are then axially displaced in the pegs locked in the peg receptacles or the rolls are correspondingly displaced in the peg receptacles.

This is done, for example, by correspondingly loading or relieving the hydraulic pressure spaces 131, 132 in FIG. 3. Mechanical adjustment can also be carried out according to the principle of FIG.

REPLACEMENT LEAF This regulation or control is provided in particular in the case of thin strips such as, for example, film strips, textile strips, aluminum strips, copper strips and the like, in which the previous control or regulation of the edge profile was difficult or impossible.

This regulation or control is also carried out with rollers according to the invention arranged in conventional stands.

The regulation or control of the spatial course of a strip to be deformed into a tube is carried out in such a way that in the region of the strip already deformed from its plane, at least one feeler roller 273 extending over both strip edges by a parallel to the direction of travel of the strip to be deformed Axis is pivotally arranged so that when the edges are pivoted the sensing rollers are also pivoted, a signal proportional to this pivoting (actual value) is generated in a manner known per se, for example by means of a rotary encoder, with the signal for the ideal edge profile the actual values -SetwertDifferenz is formed and one of the work station arranged opposite to the direction of flow of the tube, which has a rotatable pair of rollers, is fed in the sense of a purge. This is done by actuating the worm gear 270.

In general, the band edges have a ripple, the greater the more the band is deformed into the tube.

This ripple is detected by the inductive buttons 274. For this purpose, the feeler rollers 273 are arranged in their suspension according to the shock absorber principle, so that the ripple can be inductively detected perpendicular to the axis of the feeler rollers.

REPLACEMENT LEAF The ripple has the following causes:

The waviness is due to the fact that when the strip is deformed into a tube, the strip edge regions are deformed more than the other regions. Since the internal stresses of the strip material in the region of the strip edges have different effects than in the region of the strip center, it must be regarded as an advantage if this tape to be deformed is brought out of its horizontal position.

Since in the known methods the shaping of a flat (flat) band into a circular tube was always in a horizontal position, it follows from the angular functions that the band edges should always be longer than the distance from the center of the band. The result was that the strip edges were always stretched, which inevitably led to a wavy course of the strip edges. This had a disadvantageous effect, particularly in the case of thin-walled strip deformation at the welding point, which repeatedly led to high production losses.

Several factors play into the hitherto known horizontal deformation processes: unevenly cooled strip edge area, therefore unequal strength zones, strip thickness differences of the edge zones, large production program with the same roll stand spacings, i.e. constantly unequal material ratios from program to program, like other pipe diameters, others Pipe wall thicknesses, other bandwidths.

REPLACEMENT LEAF With all these changing conditions, even within a program, an exact deformation is only possible with a fully automatic control according to the invention of all machine parts and devices involved in the deformation.

The worm drive 266 is actuated to correct the waviness, so that the strip to be deformed into a tube is brought out of its plane in front of the welding point.

FIG. 24 shows in the representation of FIG. 12 a carrier disk arranged on a hollow coaxial axis designated 275. The other parts that are the same as in FIG. 12 are identified by the same reference numerals.

The coaxial hollow axis consists of four tubes 276, 277, 278 and 279 which are arranged coaxially and at a distance from one another and which delimit ring channels. The two outer ring channels serve for supplying or returning hydraulic medium to the drives 242 designed as hydraulic drives. For this purpose, couplings 280 and 281 or 282 and 283 are provided, which feed the hydraulic medium from one ring space and into the return others. Correspondingly, a coolant can be supplied and returned via further annular spaces. The inner tube serves as a cable duct. For the sake of clarity, these details are not shown.

In general, instead of several coaxial tubes, a tube can be provided in which the hydraulic lines, the coolant lines and the electrical lines for the rollers arranged on the individual carrier disks and / or the

REPLACEMENT LEAF Drives run, these lines being led through openings in the coaxial axis and releasably connected to the rollers or the drives via quick couplings.

FIG. 25 shows in the representation of FIG. 18 carrier disks arranged on coaxial hollow axes, the coaxial hollow axes 275 having end flanges 284 and the flanges being screwed to one another so that the carrier disks form a composite. The two end flanges 285 and 286 are each connected to a supply device 287 and 288, each of which has a rotary coupling known per se, via which the hydraulic working fluid and the coolant are supplied and the supply of electrical energy is ensured is (for the sake of clarity, the lines are not shown). The coaxial hollow axes are designed in accordance with FIG. 24. For the sake of clarity, only one of the connecting lines from an annular space to a drive is shown and designated 254 '.

The stands 253 _{1 2} , in which the coaxial hollow axes are rotatably mounted, are slidably guided in dovetail guides, not shown, perpendicular to the drawing plane with spindle drives, not shown. After the carrier disks have been adjusted, the flanges 284 are screwed together.

To rotate the carrier disks, the stands have stepping motors which either rotate the carrier disks independently of one another before the functional unit is manufactured or together after the functional unit has been manufactured.

REPLACEMENT LEAF FIG. 26a shows a side view of a section of a work station for smoothing the weld seam in a schematic representation, with half of the tube above the drawing plane being omitted.

Contrary to the direction of passage of the tube, which is indicated by the arrow, the work station has a holding tube 291 through which a coolant flows and which dips between the edges that have not yet been welded to one another into the interior of the tube into the area that has already been welded.

In the direction of passage of the tube, the profile has an impeder 292 and a guide frame 293 flanged on its end face with two roller pairs 294 and 295 which are arranged at a distance from one another, between which a device 296 for inductively heating the weld seam elevation is arranged on the inside of the tube is. Furthermore, a second device (not shown) for inductively heating the weld seam elevation on the outer wall of the pipe can additionally be provided on the outside of the pipe.

The two pairs of rollers are supported on the inside of the welded tube with the upper roller 297 or 298 on the weld seam elevation with the lower roller 299 or. 300 diametrically opposite only on the inner wall of the pipe.

The roller 297 smoothes the weld seam elevation on the inner wall of the tube and can additionally cooperate with a roller on the outside of the tube.

REPLACEMENT LEAF A device 301 known per se for inductively heating the two edges of the tube to be welded to one another is arranged above the impedder. The welding point is designated as 248 in FIG. 16.

FIG. 26b shows a top view of the device of FIG. 26a, the outline of the tube being shown in broken lines.

FIG. 27 shows, in the representation of FIG. 26a, a device for smoothing the weld seam elevation on the outside of a pipe to be welded with a longitudinal seam. Parts that are identical in FIG. 26 a are identified by the same reference symbols.

The device has a stationary frame 302 shown in the detail, which is supported on the outer wall of the tube with the rollers 303, 304 and a pair of rollers 305 - only one roller of which is visible. The frame has the device 306 for inductively heating the weld seam elevation, while the roller 304 smoothes the weld seam.

The rollers that smooth the weld seam are made of heat-resistant material, e.g. zirconium ceramic or special steel.

FIG. 28 a shows, in a simplified representation, the roller of FIG. 10 for printing on fabric webs, plastic webs, paper webs, etc. The same parts are identified with the same reference symbols.

REPLACEMENT LEAF The roller jacket 212 has as many radial bores 213 as possible, which are produced, for example, by means of laser beams. The roll shell has a drawn-on plastic cover 307 with bores 308 which open or block the bores 213 in a predetermined manner. Through the released bores 213 and the bores 308 communicating with them, a predetermined color in predetermined areas is transferred under pressure to a web running over the roller. In principle, the procedure is such that twenty rolls are used in a twenty-color print, for example. First, using a color analyzer and a gray wedge, the colors and hues of the original are analyzed using a computer so that the color impression of the original is optimally reproduced when printing with 20 colors or tones. Then the areas of the template assigned to the twenty colors or hues are each transferred to a material web section (FIG. 28b) corresponding to a plastic sleeve and the corresponding bores 308 are produced, for example, by means of electron or laser beams. The material web sections perforated in this way are then arranged on the associated roll shell to form the casing. When changing the template, only differently perforated plastic sleeves are arranged on the roller shells. This method is particularly suitable for fashionable designs in the fashion industry, and furthermore for high-quality reproductions of paintings. They can also be used to produce high quality images from slides. A particular advantage results when foil material is used which closes the bores again under the action of heat, etc., so that the plastic sleeves on the rollers can remain on the roller shells and are each only provided with a new configuration of the bores.

REPLACEMENT LEAF FIG. 29 shows in the representation of FIG. 15 a rotatable carrier disk, which is designated by 309. The two segments 310 and 311, which are arranged diametrically on one diameter and each have a pair of rollers 312 and 313, form a structural unit 315 with the coaxial hollow shaft 314. The carrier disk has openings 322 in the area of the roll gaps. The other segments 316, 317, 318 and 319 are shown in dashed lines, each of which has an unspecified pair of rollers and can be assembled as modules as required.

FIG. 30 also shows, in the representation in FIG. 15, a rotatable carrier disk, designated 320, with a rectangular outline for a tube rolling mill with four pairs of rollers 321. The carrier disk likewise has openings 322 in the area of the roll gaps.

Figures 31a and 31b show a section through the tube, the axis of which extends in the plane of the drawing or perpendicular to it. The figures show a device (in the detail) for removing the weld seam elevation on the inside of the tube designated 321.

The device has a drive shaft 322 which plunges into the tube and which has at its free end a milling head 323 which removes the weld seam elevation on the inside of the tube.

The device furthermore has a guide 324 for the milling head which is immersed in the tube and which has at the free end the two sliding bearings 323 and 326 between which the milling head is arranged.

REPLACEMENT LEAF The end section of the drive shaft is supported in the two slide bearings.

The device also has an inflow line 327, which feeds drilling oil to the milling head, which carries away the removed chips from the weld seam elevation.

The guide also has support rollers 328, 329, 330 and 331, which are supported on the inner wall of the tube.

The weld seam elevation on the outside of the tube is removed with an appropriately arranged milling head.

REPLACEMENT LEAF

Claims

Claims

1.) Roll, in particular for rolling mills and steelworks, characterized in that the roller body (1) has an axially continuous bore (2) and an axis (5) with a plurality of stepped axis sections (6, 7, 8), the roller body with the middle axis section (7) is non-positively connected, the hollow cylindrical pins (3, 4) are arranged axially displaceably on the outer axis sections (6, 8), the inner pin sections (12, 14) via a steep thread (25 or 26) are in engagement with the roller body, the pins are in engagement with the outer axle sections via a splined shaft connection and can be brought into and engaged with the journal receptacles (28, 28) rotatably mounted in the roll stand according to the principle of the multiple spline shaft connection.

2.) Roller according to claim 1, characterized in that the roller body on its end faces with the outer

Pin sections on the splined shaft connection in

Has engaged adjustment rings (34, 35).

3.) Roll, in particular for rolling mills and steelworks, characterized in that the roller body (41) has an axially continuous bore (42) and an axis (45) with a plurality of stepped axis sections (46, 47, 48), the roller body with the middle axis section (47) is non-positively connected, on the outer axis sections (46, 48) the hollow cylindrical

REPLACEMENT LEAF Pins (43, 44) are arranged to be axially displaceable, the inner pin sections form hydraulic pistons (52, 54) which can be acted upon on both sides, the pins are in engagement with the outer axle sections via a splined shaft connection and, according to the principle of the splined shaft connection, with those in the roll stand rotatably mounted pin receptacles (67, 68) can be brought into engagement.

4.) Roll, in particular for rolling mills and steelworks, characterized in that the roller body (101) has an axially continuous bore (102) and an axis (105) with a plurality of stepped axis sections (106, 107, 108), the roller body the hollow cylindrical pins (103, 104) on the multi-spline shafts (127) of the pin receptacles (123, 124) rotatably mounted in the roll stand are axially displaceably connected to the central axis section (107), the inner pin sections can be pressurized on both sides Form pistons (111, 113) and the outer journal sections (112, 114) can be brought into and out of engagement with the outer axle sections (106, 108) according to the principle of the multi-spline shaft connection.

5.) Roll according to one of claims 1 to 4, characterized in that the stand (121) of the roll stand has a setting device (140) for the axial adjustment of the roll during rolling operation, in the housing of the setting device a screw (141 ) is in engagement with a worm wheel (142), the worm wheel on the inner circumference is in engagement with an intermediate ring (143) via a trapezoidal thread (142 '),

REPLACEMENT LEAF in which an inner ring (144) is rotatably mounted, and the inner ring has tension and pressure bolts (144 ') which are connected to the bearing housing (145') of a thrust bearing (145 ") arranged on one end face of the roller body.

6.) Roll, in particular for rolling mills and steelworks, characterized in that the roll body (152) has an axially continuous bore and is rotatably mounted on an axis (153) with a plurality of stepped axis sections (154, 155, 156) middle axis section (154) has stator windings (158), on the opposite inner wall of the roller body the rotor windings (160) are arranged, between the outer axis sections (154, 156) and the roller body the bearings (162) are arranged, the hollow cylindrical pins on the Multiple wedge pins (127) of the pin receptacles (123, 124) rotatably mounted in the roll stand, the inner pin sections form hydraulic pistons (111, 113) which can be acted upon on both sides, and the outer pin sections (112, 114) according to the principle of Multi-spline connection can be brought into engagement with the outer axle sections.

7.) Roller according to claim 6, characterized in that the axis (153) and the splined shaft (171) are hollow-cylindrical, the splined shaft is a hollow cylindrical piston rod (172) and with the formation of pressure chambers (174, 175) a hollow cylindrical, Guide the pistons (173), which can be hydraulically loaded on both sides, the pistons and the piston rods with the axial coupling elements

ERS _A TZ _B LATT Form a bore of the axis, each telescopically engaged with a tube (180) arranged in the pin flanges, from the axial bore of the axis bore sections into the stator rotor of the roller for the supply and removal of a cooling medium.

8.) Roller according to claim 6 and 7, characterized in that the roller body (152) a roller shell (187) and one

Has roller axis (188) and the central axis section is designed as a hydraulic drive (186).

9.) Roller according to claim 8, characterized in that to form the hydraulic drive, the central axis section (188) arranged on a diameter and with the roller jacket pressure chambers (191, 192) delimiting pistons (189, 190), the piston with connecting rods (193, 194) are articulated on a bolt (195) of the central axis section and between the roll shell and the axis section inlet slots (196) and outlet slots (197) with inlet and outlet bores (198 and 199) are formed.

10.) Roll, in particular for rolling mills and steelworks, characterized in that the roller body (200) has a blind hole (201 or 202) on the end faces, the full-walled pins (203, 204) are arranged axially displaceably in the blind holes are, the pins are in engagement with the roller body via a splined shaft connection and after

REPLACEMENT LEAF the principle of the multi-spline shaft connection with the pin receptacles (28) rotatably mounted in the roll stand can be brought into and out of engagement via magnetic coils (205, 206).

11.) Roll, in particular for rolling mills and steelworks, characterized in that the roll body from the roll casing (212) with the holes (213) opening into the casing surface and the axis (215) spaced apart with formation of the sealed annular gap (214) ) there is, the axis has a blind hole (211) on the end faces, in the blind holes the hollow cylindrical pins (216, 217) are arranged to be axially displaceable, the pins are in engagement with the roller body via a splined shaft connection and after that The principle of the multi-spline shaft connection can be brought into engagement with the pin receptacles rotatably mounted in the roll stand, the axis has at least one bore (218) running along the diameter and opening into the annular gap and at least one bore (219) branching axially to the pins, in the axial bore Pipe (220) is used, which is based on the telescopic principle with the hollow cylindrical Z is engaged, and the hollow cylindrical pin can be brought into and out of engagement with a tube (222) of the pin receptacle according to the telescopic principle.

12.) Rolling mill which in particular has caliber rolls, characterized in that the pairs (240) of rolls assigned to each work station are combined to form a group and the pairs of the work stations assigned to the work stations

E _RS ATZBLATT Rolls can be brought into their working position by rotating each group about a rotation axis common to their roller pairs.

13.) Rolling mill, which in particular has caliber rolls, characterized in that the pairs of rolls assigned to each work station are combined to form a group of top rolls (255) and a group of bottom rolls (256) and which are assigned to the work stations according to a rolling program Upper rolls and lower rolls can be brought into their working position by rotating each group about an axis of rotation common to their rolls.

14.) Rolling mill, which in particular has caliber rolls according to claim 12, characterized in that the pairs of rolls are each arranged in a roll holder (241), the center line of the roll nip runs in each case on a straight line passing through the axis of rotation, the roll holder on (in ) a support disc (244) which is rotatable about the axis of rotation are arranged, the roller holder is arranged to be displaceable and lockable on (in) the support disc in the direction of the center line of its roll gaps and the support disc has openings (245, 260) in the region of the roll gap (243).

15.) Rolling mill, which in particular has caliber rolls, according to claim 12 or 14, characterized in that

REPLACEMENT LEAF the pairs of rolls are each arranged in a roll holder, the center line of the roll nips each runs perpendicular to a straight line passing through the axis of rotation, the roll holder is arranged on (in) a carrier disk which can be rotated about the axis of rotation, the roll holders in each case in the direction of the center line their nips on (in) the carrier disc are arranged displaceable and lockable and the carrier disc has openings in the area of the nips.

16.) Rolling mill according to one of claims 12 to 15, characterized in that the pairs of rollers are each arranged in a roller holder (241), the roller holders are arranged on (in) a support disc (244) rotatable about the axis of rotation and the Roll receptacles can each be rotated about an axis of rotation parallel to the axis of rotation of the rotatable carrier disk on (in) the rotatable carrier disk and the rotatable carrier disk has openings in the area of the roll gaps.

17.) Rolling mill, in particular tube rolling mill, which in particular has caliber rolls, according to claim 16, characterized in that the pairs of rolls are each arranged in a roll holder, the roll holders are each guided in a divided rectangular plate (265) so as to be displaceable and lockable, the divided rectangular plate has a circular dovetail recess (266 ') and is rotatably engaged with the roller bearing (267) via a worm drive ((270).

ER _S ATZB _L ATT

18.) Rolling mill, in particular stretch-reducing mill, the rolls of which are combined to form tripein, characterized in that the triples of the rolls are each arranged in a roll holder, the roll holders are arranged on (in) a carrier disk which can be rotated about the axis of rotation, and the roll holders are arranged around an axis of rotation parallel to the axis of rotation of the rotatable carrier disk can be rotated on (in) the rotatable carrier disk and the rotatable carrier disk has openings in the area of the roll gaps.

19.) Rolling mill, in particular having caliber rolls, according to claim 13, characterized in that the upper rolls and the lower rolls are arranged in roll holders, the roll holder with the upper rolls and the roll holder with the lower rolls are each arranged on (in) a rotatable carrier disk, the roll receptacles of the upper rolls and the roll receptacles of the lower rolls are each displaceable and lockable in the direction parallel to the center lines running through the axis of rotation of the two support disks, and the support disks have openings in the area of the roll gaps.

20.) Rolling mill having caliber rolls, according to claim 13, characterized in that the upper rolls and the lower rolls are arranged in roll holders, the roll holder with the upper rolls and the roll holder with the lower rolls are each arranged on (in) a rotatable carrier disk, the roll holder

^efts ^ 8L _{4 τ} the upper rollers and the roller holder of the lower rollers are each displaceable and lockable perpendicular to the center line of the roller pairs to be formed in the direction of the axis of rotation of the two rotatable carrier disks, and the rotatable carrier disks have or limit breakthroughs in the area of the roll gaps.

21.) Rolling mill, in particular having caliber rolls, according to one of claims 15 to 20, characterized by the use of rolls according to one of claims 1 to 14.

22.) Rolling mill, in particular having caliber rolls, according to claim 21, characterized by for controlling (regulating) the edge course of strips or of

Profiles the rollers on their tenons or the rollers in their

Pin receptacles are controllable in the axial direction.

23.) Rolling mill, in particular having caliber rolls, according to one of claims 15 to 22, characterized in that the axes of the rotatable carrier disks have an axial bore for adjusting the rotatable carrier disks with laser beams along the rolling mill line.

REPLACEMENT LEAF

24.) Method for controlling or regulating the edge course of strips, wherein rollers with the features of one of claims 1 to 11 or rolling mills according to one of claims 12 to 23 are used, characterized in that when the center of the strip deviates from in the middle of the roller train at at least one work station, the deviation is detected by scanning at least one belt edge and the signal representing the deviation (setpoint-actual value difference) of an adjusting device (actuator) for roller bodies axially displaceable on its journal or in the journal receptacles axially displaceable rollers is fed to the work station preceding the direction of passage.

25.) Method for controlling or regulating the passage of profiles through roller mills, rollers with the features of one of claims 1 to 11 or rolling mills according to one of claims 12 to 23 being used, characterized in that when the distance changes the edge of the profile from a predetermined reference line at (in) at least one workstation, the deviation is detected by scanning the edge of the profile and the signal representing the deviation (setpoint-actual value difference) of an adjusting device (actuator) for the axially adjustable roller cores on its pin or in the pin receptacles axially displaceable rollers is fed to the previous work station in the direction of passage.

REPLACEMENT LEAF

26.) Method for controlling or regulating the edge profile of strips to be deformed into pipes, rolls having the features of one of claims 1 to 11 or rolling mills according to one of claims 12 to 23 being used, characterized in that in the area of from its plane of deformed strip, at least one sensing roller extending over the strip edges and pivotable about an axis parallel to the direction of travel of the strip to be deformed, the deviation of the edges from a predetermined course is recorded and the setpoint / actual value difference of the deviation against the direction of the passage of the tube in front of the welding point arranged work station is fed with a rotatable pair of rollers.

27.) Method according to claim 26, characterized in that the ripple of the edges is detected inductively and the signal representing the ripple as a setpoint-actual-value difference of a work station arranged against the direction of travel of the tube in front of the welding point and having a height-adjustable pair of rollers is fed for appropriate adjustment of the pair of rollers.

28.) Device according to one of claims 12 to 23, characterized in that the number of rollers or pairs of rollers on the rotatable carrier disks can be expanded as desired by increasing the carrier disk radius over the entire circumference or only in one segment.

REPLACEMENT LEAF

29.) Device according to claim 28, characterized in that the angle a can be changed as desired (Figure 12a)

30.) Device according to one of claims 12 to 23, 28, 29, characterized in that the carrier disc is a triangle, quadrilateral or polygon.

31.) Device according to one of claims 12 to 30, characterized in that the carrier disc has a coaxial hollow axis and in the coaxial hollow axis hydraulic lines and / or

Coolant lines and / or electrical lines for the

Rollers and / or the drives are arranged on the carrier disc.

32.) Device according to claim 31, characterized in that the hydraulic lines and / or the coolant lines and / or the electrical lines have couplings for lines which lead through openings in the coaxial hollow axis to the rollers and / or the drives.

33.) Device according to claim 31 or 32, characterized in that the hydraulic lines and / or the coolant lines and / or the electrical lines of a coaxial hollow

Axle couplings for the hydraulic lines and / or

Coolant lines and / or electrical lines

REPLACEMENT LEAF have subsequent coaxial hollow axes and the releasable couplings are accessible from the area of the end faces of the carrier disks.

34.) Device according to one of claims 12 to 30, characterized in that the hollow coaxial axis with coaxial tubes arranged in it limit annular spaces for the supply and return of hydraulic working fluid and / or coolant.

35.) Device according to claim 34, characterized in that the inner tube forms a cable duct for the leading to the rollers and / or the drives electrical lines

36.) Device according to one of claims 31 to 35, characterized in that the coaxial hollow axes of the carrier disks have front coupling flanges to form a composite unit.

37.) Device according to one of claims 31 to 36, characterized in that the coaxial hollow axes are mounted in mutually adjustable stands.

38.) Device according to one of claims 12 to 37, characterized in that

E _RSA T _ZBL ATT the stands have stepper motors for rotating the carrier disks.

39.) Pipe rolling mill with the features according to one of claims 12 to 38, characterized in that a tube of a work station is immersed in the tube to be welded with a longitudinal seam, the tube itself with at least one pressure roller on the weld seam elevation to be smoothed on the inner wall of the tube and / or is supported with at least one further pressure roller on the weld seam elevation to be smoothed on the outer wall of the tube and a device for inductive heating of the area of the weld seam elevation is arranged between the pressure roller and the welding point.

40.) Pipe rolling mill according to claim 39, characterized in that the pressure rollers for smoothing the heated weld seam increase consist of ceramic material.

41.) Rolling mill, which in particular has caliber rolls, according to one of claims 14 to 23, characterized in that the rotatable carrier disc consists of several segments, each with a pair of rolls, and two segments with the coaxial hollow axis form a structural unit.

REPLACEMENT LEAF

42.) Pipe rolling mill according to one of claims 12 to 38, characterized in that a drive shaft (322) of a drive station is immersed in the pipe to be welded with a longitudinal seam, the drive shaft has a milling head (323) which removes the weld seam elevation and an inflow line ( 327) feeds the milling head drilling oil.

ER _S ATZB _L ATT