Triple rotationally symmetrical frame housing with integrated media supply lines

Abstract

The present application relates to a stand housing (10) for a rolling mill stand (1) for rolling metallic bars, wires, or tubes along a rolling axis, wherein the stand housing (10) has an outer surface (12) with six side faces (14.1-14.6) which, viewed along the rolling axis, form edges of a regular hexagon, an inlet side, and an outlet side (13). At least one water inlet opening is arranged on three of the non-adjacent side faces (14.1, 14.3, 14.5), which is configured to direct water through the interior of the stand housing (10) to a water outlet opening (42.1, 42.2, 42.3) in the outlet side (13) or in the inlet side.

Description

TECHNICAL AREA

[0001] The present invention relates to a stand housing for a rolling stand for rolling metallic bars, wires or tubes along a rolling axis with water inlet openings designed to direct water through the interior of the stand housing to water outlet openings. BACKGROUND

[0002] Stand housings of the above technical field are generally known, for example from CN 212 760 366 U and CN 212 760 331 U. Previous stand housings mostly have a rectangular shape when viewed along the rolling axis.

[0003] Typically, several rolling stands are arranged sequentially within a rolling mill. This allows the material to be stretched and rolled to a smaller diameter, particularly through a difference in the rolling speeds of the individual stands.

[0004] Furthermore, the roundness of the rolled material after passing through a rolling mill is generally insufficient, as the cross-section assumes a polygon-like shape due to the arrangement of the rolls and their relatively small number, with the number of sides of the polygon corresponding to the number of rolls in the mill. For example, rolled material processed by a single three-roll mill has a cross-sectional shape that is not ideally round, but approximately triangular.

[0005] To improve the roundness of the rolled material, the successive rolling stands are preferably arranged in such a way that the corners of the rolled material cross-section of the rolled material leaving one rolling stand are centrally contacted by the rollers of the following rolling stand, and the rolled material cross-section is thereby rounded.

[0006] Therefore, when using a three-roll rolling mill, the three rolls of, for example, the first and third stands of a four-stand mill are typically arranged in a so-called "Y-arrangement," while the rolls of the subsequent stands, for example, the second and fourth, are arranged in a so-called "anti-Y-arrangement" (λ). This alternating arrangement of rolls and stands in Y-arrangement and anti-Y-arrangement ensures that the corners of the workpiece cross-section are rounded by a roll in each subsequent stand.

[0007] In the Y-arrangement, the lower roll is oriented so that its roll shaft is horizontal, meaning that the diameter of the lower roll extends vertically in the direction of the roll axis. In contrast, in the anti-Y arrangement, it is the upper roll whose roll shaft is horizontal, meaning that the diameter of the upper roll extends vertically in the direction of the roll axis. The roll shafts of the two other rolls are tilted by 120° relative to the horizontal roll shaft in both cases. Of course, the arrangements relative to the horizontal are arbitrary overall, because for the effect described here, only the relative arrangement of the rolls with respect to adjacent rolling stands is relevant.

[0008] The arrangement of rolling stands in a row to form a roll block is usually achieved using stand supports into which the stands are inserted and held. This makes it possible to replace rolling stands within the roll block, for example, for regularly required maintenance.

[0009] The rolling stand known from CN 212 760 366 U allows it to be switched between the Y-arrangement and anti-Y-arrangement by rotating it 180° around a horizontal axis and inserted into the stand mount in both orientations. The upper and lower side surfaces of the rectangular stand housing serve as bearing surfaces in the stand mount.

[0010] For the operation of a rolling mill stand, it is common practice to attach peripheral equipment to the stand. Furthermore, for precise barrel pitch adjustment, it has proven advantageous to be able to adjust the rolls, for example, by mounting them via an eccentric mechanism, thus allowing their distance from the roll axis to be varied. Various adjustment methods exist, the details of which are not relevant here. However, with known rolling mill stands, it is necessary to undertake extensive modifications to the stand and its mounting for different adjustment configurations, namely remote and manual adjustment, as well as for various peripheral devices such as an entry roller guide or similar components. This modification particularly involves routing water or another cooling medium through the stand housing and, if necessary, compressed air for sealing the housing. PRESENTATION OF THE INVENTION

[0011] Against this background, one object of the present invention is to provide a stand housing of the above technical field which enables a more flexible use of the rolling stand within a rolling block and in particular a more flexible selection of both a position in the rolling block and a configuration, while maintaining a compact design of the rolling block including a water line inside the stand housing.

[0012] This problem is solved by a scaffold housing according to claim 1. Advantageous embodiments of the invention are described in the dependent claims.

[0013] A stand housing for a rolling mill stand for rolling metallic bars, wires, or tubes along a rolling axis has an outer surface with six side faces, which, viewed along the rolling axis, form the edges of a regular hexagon, an inlet side, and an outlet side. At least one water inlet opening is arranged on three of the non-adjacent side faces, designed to direct water through the interior of the stand housing to a water outlet opening in the outlet side or the inlet side.

[0014] This design of the frame housing allows for particularly flexible use within a rolling mill. Compared to prior art frames with internal water lines, this design facilitates easier repositioning between different positions, orientations, and configurations within the mill.

[0015] In this context, the side surfaces are those surfaces of the stand housing that laterally define the inlet and outlet sides through which the rolling axis runs. Together, viewed along the rolling axis, they form the outer lateral surface of the stand housing.

[0016] The side surfaces of the stand housing can serve as a base, have a base, or run parallel to a base or several bases, for example, formed by sliding rails, on which the rolling stand can stand stably, particularly in a stand support. The side surfaces do not have to be flat, but can also have steps, projections, recesses, or openings, and can also be made up of multiple parts.

[0017] The water inlet openings on the non-adjacent side faces are distributed across the side faces such that at least every other side face has at least one water inlet opening. It is also possible for all side faces to have at least one water inlet opening, and for one or more side faces to have multiple water inlet openings. The fact that three non-adjacent side faces each have at least one water inlet opening reflects the symmetry of the regular hexagon and is primarily intended for a frame housing with three rollers.

[0018] The water outlet openings on the outlet side or the inlet side, or on both the outlet and inlet sides, serve to discharge the water, which is directed into the stand housing via the water inlet opening connected to the water outlet opening, to a peripheral device, for example an inlet roller guide or a cooling device for the rollers of the rolling stand.

[0019] Preferably, two parallel water inlet openings are arranged on the three non-adjacent side surfaces, one of which is designed to direct water through the interior of the frame housing to a water outlet opening on the outlet side, and the other of which is designed to direct water through the interior of the frame housing to a water outlet opening on the inlet side.

[0020] The fact that the two aforementioned water inlet openings on the same side surface are aligned parallel to each other has the advantage that connecting a water supply in a scaffold receptacle, into which the scaffold housing is inserted, can be accomplished for both water inlet openings with the same linear movement. It is preferred that one of the water inlet openings is located near the outlet side and the other near the inlet side of the scaffold housing.

[0021] In particular, the water outlet openings, viewed along the roller axis, are each located on a perpendicular bisector of an edge of the hexagon. This preferred positioning of the water outlet openings on the perpendicular bisectors can be especially preferably located on an extension of a roller plane, i.e., a plane of rotation, in the direction of the edge of the hexagon nearest to an associated roller. This allows for a space-saving arrangement of a water inlet for an inlet roller guide.

[0022] Preferably, an air connection is arranged on each of three non-adjacent side surfaces, designed to supply compressed air to the interior of the frame housing. An air connection for supplying compressed air to the frame housing to seal it against unwanted water ingress, for example, through bearings, is generally known. Due to the preferred design of the frame housing, it can be efficiently and flexibly inserted into the frame receptacle of the rolling mill without the advantage of a compressed air seal compromising this efficient use of the frame housing. Thus, a particularly versatile and reliable frame housing is provided.

[0023] Advantageously, the three air connections open into a common cavity, with the frame housing designed to prevent compressed air from escaping from any of the air connections by means of a valve. The three air connections can therefore preferably be equipped with a check valve or similar device to allow the common cavity to be pressurized with compressed air for sealing purposes through all three air connections, without restricting the flexibility of the frame housing's use within the rolling mill. The air connections of the frame housing not connected to a compressed air system can be automatically closed by their respective check valves, or manually closed if a different valve is used.

[0024] Advantageously, the air connections are arranged on the same non-adjacent side surfaces as the water inlet openings. This allows the respective water and compressed air connections to be positioned close together on the stand mounting side, resulting in an overall efficient design of the rolling block. However, it is also possible to arrange the air connections on the side surfaces that are adjacent to the water inlet openings.

[0025] Preferably, one of the water inlet openings and one of the air connections are aligned parallel to each other and designed to be connected along the same direction. This ensures that these connections can be made simultaneously when the rolling stand is inserted into a stand support and in the same insertion direction, thus guaranteeing a particularly safe and efficient connection to the corresponding connections of the stand support.

[0026] A preferred frame housing further comprises three bearing bores for supporting a roller shaft, wherein the bearing bores are rotationally symmetrical and offset by a 120° rotation about the roller axis in one of the side surfaces, and wherein the water inlet openings are provided in those side surfaces that do not have bearing bores.

[0027] This design of the scaffold housing ensures that the water inlet openings do not collide with the roller shafts or their scaffold-side drive trains and that the installation space in the scaffold housing and in the scaffold mounting is used efficiently.

[0028] A preferred frame housing is closed and undivided, and in particular manufactured from a single monoblock. In other words, the frame housing is preferably integrally manufactured and can therefore be produced, for example, by a casting process, which enables advantageous mechanical properties for absorbing the loads acting during the rolling process and efficient manufacturing.

[0029] A preferred rolling stand for rolling metallic bars, wires or tubes along a rolling axis comprises three rolls, each mounted on a roll shaft and surrounding the rolling axis in a star shape, together forming a caliber, and a stand housing as described above.

[0030] Further advantages and developments of the invention will result from the following description of the figures and the entirety of the claims. SHORT FIGURE DESCRIPTION

[0031] Fig. 1A is a view along a rolling axis of a preferred rolling stand in an anti-Y arrangement in a first positioning configuration. Fig. 1B is a view along the rolling axis of the rolling stand from Fig. 1A in a Y-arrangement in the first deployment configuration. Fig. 1C is a view along the rolling axis of the rolling stand from Fig. 1A , in the anti-Y arrangement in a second employment configuration. Fig. 1D is a view along the rolling axis of the rolling stand from Fig. 1A , in the Y-arrangement in the second employment configuration. Fig. 2A is a perspective view of the rolling mill from Fig. 1A from a first perspective. Fig. 2B is another perspective view of the rolling mill from Fig. 1A from a second perspective. Fig. 3A is a side view of the rolling mill made of Fig. 1A , which shows an employment connection. Fig. 3B is another side view of the rolling mill Fig. 1A , which shows a side opposite the employment connection. WAYS TO IMPLEMENT THE INVENTION

[0032] In the following character descriptions, identical or corresponding elements are given the same reference symbols, and repetitive descriptions are largely avoided.

[0033] Fig. 1A Figure 1 shows a view along a rolling axis 19 extending in the Z direction of a preferred rolling stand 1 for rolling metallic bars, wires, or tubes. The rolling stand 1 comprises a stand housing 10, which, in the embodiment shown here, has the shape of a regular hexagon when viewed along the rolling axis 19. An outer surface 12 of the stand housing 10 is provided with six side surfaces 14.1-14.6 of equal length, which are arranged rotationally symmetrically around the rolling axis 19. Adjacent side surfaces 14.1-14.6 merge into one another in a region designated as a corner 16.1-16.6. The corners 16.1-16.6 may have different characteristics. They have a butt joint between the adjacent side surfaces 14.1-14.6 that merge into one another in the corner 16.1-16.6; this joint may be sharp-edged, but is preferably chamfered or rounded. Also a small intermediate area between adjacent side faces 14.1-14.A chamfer of 6, in the sense of a pronounced, relatively wide chamfer, is possible and is still understood in the present context as corner 16.1-16.6. One in . Fig. 1A Inlet side 15, which is not visible but is in Fig. 1B is depicted, and one in Fig. 1A The outlet side 13 of the frame housing 10 shown in the illustration thus has, like the frame housing 10 of the present embodiment, a regular hexagonal shape, which is distinguished, among other things, by having three pairs of side surfaces 14.1, 14.4, 14.2, 14.5, 14.3, 14.6, each of which lies parallel to the others. The frame housing 10 is manufactured as a monoblock.

[0034] The preferred rolling stand 1 is designed such that the in Fig. 1A unshown inlet page 15 of the in Fig. 1A The outlet side 13 shown is the same, so that all features described below for the outlet side 13 can be found on the opposite side of the frame housing 10 at the same or corresponding locations, as will also be shown below with reference to other figures.

[0035] The rolling stand 1 further comprises three rolls 20.1, 20.2, 20.3 arranged in a star shape around the rolling axis 19. The rolls 20.1-20.3 each define a plane of rotation that is at an angle of 120° to each other and intersects at the rolling axis 19. The planes of rotation of the rolls 20.1-20.3 are arranged orthogonally to each pair of side surfaces 14.1-14.6 of the stand housing 10. In the region of the rolling axis 19, the rolls 20.1-20.3 form a caliber 21 between them. The caliber 21 is enclosed, in particular, by a rolling surface 22 of each of the rolls 20.1-20.3, wherein the rolling surfaces 22 of the rolls 20.1-20.3 are formed as a concave groove centrally along the circumference of the respective roll 20.1-20.3 in order to give the rolled material as round an outer contour as possible. Depending on the rolled material, the rolling surface 22 can also be configured differently, in particular as a flat surface or as a convex surface. Fig. 1A It can be seen that the rollers 20.1-20.3 are arranged in an anti-Y arrangement because the upper roller 20.1 is vertical and the two remaining lower rollers 20.2, 20.3 are each at an angle of 120° to the vertical orientation of the upper roller 20.1.

[0036] The rollers 20.1-20.3 are each fixedly mounted on a roller shaft, via which the rollers 20.1-20.3 are driven. The axes of rotation of the roller shafts run parallel to each pair of side surfaces 14.1, 14.4, 14.2, 14.5, 14.3, 14.6. The axes of rotation are also transverse to the roller axis 19 and arranged rotationally symmetrically or in a star shape around it. The axis of rotation of the roller shaft of the in Fig. 1A The upper roller 20.1 is aligned in the X direction. The axes of rotation of the two other roller shafts are aligned at angles of 120° and 240° respectively with respect to the axis of rotation of the upper roller shaft. Of the roller shafts, in Fig. 1A Only one drive-side end 24.1, 24.2, 24.3 is shown, which protrudes outwards from one of the side surfaces 14.2, 14.4, 14.6 of the frame housing 10. This allows the roller shafts to be connected to an external drive, which can then transmit its rolling torque to the roller shafts and thus to the rollers 20.1-20.3 via a coupling.

[0037] The roller shafts run inside the frame housing 10, which also contains an eccentric adjustment (not shown) for positioning the rollers 20.1-20.3 via their roller shafts. The eccentric adjustment allows for the adjustment of the distance between the roller shafts, and thus the rollers 20.1-20.3, on the one hand, and the roller axis 19 on the other, in the XY plane. Fig. 1A The adjustment can be modified. This allows for the setting of different sizes of the caliber 21 and also compensates for wear on rollers 20.1-20.3 while maintaining a constant caliber 21. The eccentric adjustment forms an adjustment mechanism for rollers 20.1-20.3.

[0038] The adjustment mechanism of the rollers 20.1-20.3 can be operated externally by rotating an adjustment port 30 protruding outwards near corner 16.1. The adjustment port 30 is located in the Fig. 1A In the illustrated embodiment, the adjustment port 30 is designed to be both manually operable and automatically actuated by a motor. The adjustment port 30 is preferably connected to a rotatably mounted gear shaft extending into the interior of the frame housing 10 and to a bevel gear that engages in a toothed segment of an eccentric bushing of the eccentric adjustment mechanism. The eccentric bushing transmits a rotary motion transmitted to it via the bevel gear to the two other eccentric bushings, thus enabling synchronous adjustment of the rollers. The adjustment mechanism extends beyond the adjustment port 30 into Fig. 1A not shown in detail.

[0039] The adjustment port 30 is located near corner 16.1 and the transmission shaft connected to the adjustment port 30 runs parallel to the one in Fig. 1A upper roller shafts, i.e., in the X direction, whose drive-side end 24.1 protrudes from the frame housing 10 on the opposite side. The adjustment port 30 is thus located essentially opposite the drive-side end 24.1 of a roller shaft that runs parallel to the transmission shaft. This relative arrangement implies that the adjustment port 30 is not obscured by a roller motor aligned with the drive-side end 24.1 of one of the roller shafts, because the drive-side ends 24.2, 24.3 of the roller shafts adjacent to the adjustment port 30 are oriented at approximately 60° upwards and downwards with respect to the adjustment port 30 and its transmission shaft, so that the motors coupled to them form a large clearance between them, leaving the adjustment port 30 freely accessible.

[0040] The employment connection 30 is in Fig. 1A near corner 16.1 and slightly offset upwards with respect to an imaginary horizontal center plane of the frame housing 10. A distance between the adjustment connection 30 and the parallel to the transmission shaft, i.e. in Fig. 1A in the X-direction, running midplane along the Y-axis in Fig. 1A This is less than 10% of the extent of the scaffold housing 10 in the Y direction, i.e., between two opposite side surfaces 14.2, 14.5 of the scaffold housing 10.

[0041] In Fig. 1A Three mounting elements 26.1, 26.2, 26.3 are for a Fig. 1A The guide for the rolled material is not shown. The guide can be mounted on the exit side 13 of the stand housing 10, which is located in Fig. 1A shown. On inlet page 15, which is in Fig. 1A If it is not apparent, the mounting elements 26.1, 26.2, 26.3 can also be arranged so that a guide for the rolled material can be mounted there.

[0042] The guide for the rolled material can, for example, be a roller guide, in particular an inlet roller guide 60, as exemplified in Fig. 1B The assembly elements 26.1, 26.2, 26.3 are arranged in a star shape around the rolling axis 19 and are each, with respect to the rolling axis 19, opposite one of the rolls 20.1, 20.2, 20.3. The three assembly elements 26.1, 26.2, 26.3 are each arranged at an angular interval of 120° around the rolling axis 19.

[0043] Furthermore, on the in Fig. 1A On the outlet side 13 of the scaffold housing 10 shown, three coupling clamping areas 50.1, 50.2, 50.6 are arranged in adjacent corners 16.1, 16.2, 16.6 of the scaffold housing 10. The coupling clamping areas 50.1, 50.2, 50.6 are each bounded by two clamping strips 52. The three adjacent corners 16.1, 16.2, 16.6 in which the coupling clamping areas 50.1, 50.2, 50.6 are arranged are corner 16.1, in which the adjusting connection 30 is also arranged, and the two corners 16.2, 16.6 adjacent to it. The coupling clamping areas 50.1, 50.2, 50.6 serve to connect a roller guide adjusting connection 64, which is located in Fig. 1A not, but in Fig. 1B As shown, it is securely attached to the stand housing 10. This relative arrangement of the coupling clamping areas 50.1, 50.2, 50.6 in the corner 16.1 of the positioning connection 30 and the two surrounding corners 16.2, 16.6 allows the special flexibility of the arrangement and configuration of the rolling stand 1 with a roller guide to be combined and thus transferred to the overall system of rolling stand 1 and roller guide.

[0044] In Fig. 1A The figure shows that the scaffold housing 10 has four slide rails 40.2, 40.3, 40.4, 40.5 on the outlet side 13, which are arranged parallel to four adjacent side surfaces 14.2, 14.3, 14.4, 14.5. The slide rails 40.2-40.5 connect to one another and extend along the circumference of the hexagonal scaffold housing 10 from corner 16.2 with coupling clamping area 50.2 to corner 16.6 with coupling clamping area 50.6. The slide rails 40.2-40.5 are shown in the figure. Fig. 1A not on the side surfaces 14.2-14.5, but offset inwards in the direction of the rolling axis 19. The sliding strips 40.2-40.5 form sliding surfaces that extend circumferentially along the side surfaces 14.2-14.5 and outwards from the plane of the sheet parallel to the rolling axis 19 and the side surfaces 14.1-14.6, i.e. in Fig. 1A in the Z-direction. Thus, the sliding strips 40.2-40.5 can serve as a contact surface for the rolling stand 1 in four orientations and are primarily intended to facilitate the insertion of the rolling stand 1 into a stand receptacle (not shown) by allowing the rolling stand 1 to be slid into the receptacle on the sliding strips 40.2-40.5, which can also be used as sealing elements. On the in Fig. 1A On the opposite inlet side 15, not shown, there are also four sliding strips 40.2-40.5 opposite the sliding strips 40.2-40.5 shown, so that a pair of sliding strips 40.2-40.5 on opposite sides can be used for stable support of the rolling stand 1 in a stand mount.

[0045] The rolling stand 1 also has three water outlet openings 42.1, 42.2, 42.3 on the side shown in Fig. 1A shown outlet side 13. Cooling water, which is to be used, for example, for an inlet roller guide, can thus be discharged at one of the side surfaces 14.1, 14.3, 14.5 through in Fig. 1A Water is introduced into the scaffold housing 10 through the water inlet openings not shown, guided through the scaffold housing 10 and directed out through one of the water outlet openings 42.1, 42.2, 42.3 and from there fed to the roller guide.

[0046] In the corners 16.2, 16.3, 16.4, 16.5, 16.6 bounding the side surfaces 14, along which the sliding strips 40.2, 40.3, 40.4, 40.5 are arranged, there are also a total of five clamping points 44.2, 44.3, 44.4, 44.5, 44.6 on the Fig. 1A the outlet side 13 shown and the inlet side 15 not shown in this figure, through which a clamping force from the stand mount can be absorbed to fix the rolling stand 1.

[0047] Fig. 1B The rolling mill stand 1 shows Fig. 1A in a position opposite the orientation of Fig. 1A by tilting the rolling stand 1 about a horizontal axis K, i.e., running in the X-direction, by 180°. Thus, in Fig. 1B a view of the rear of the rolling mill stand 1 according to Fig. 1A , i.e., the inlet side 15, is shown. In this position of the rolling stand 1, the rolls 20.1-20.3 are, in contrast to the one shown in Fig. 1A The positions shown are arranged in a Y-arrangement.

[0048] The roller shafts are positioned relative to the position of the rolling stand 1. Fig. 1A The drive-side ends 24.1-24.3 are shifted parallel to each other, and therefore protrude from the stand housing 10 in the same direction, but at a different position, namely mirrored at the respective corners 16.2, 16.4, 16.6. The depicted rolling stand 1 thus allows, through the tilting described above, its use in the rolling block with both a Y-arrangement and an anti-Y-arrangement of the rolls 20.1-20.3 in the same stand mount, with the drive-side ends 24.1-24.3 of the roll shafts only shifting translationally. This enables a high degree of operational flexibility for the rolling stand 1 in a compact rolling block. The rolling drives, which are coupled to the drive-side ends 24.1-24.3 of the roll shafts in both positions of the rolling stand 1, can be arranged for each stand position with alternating Y-arrangement and anti-Y-arrangement on the same side of the rolling axis 19, which keeps the space requirement of the entire rolling block relatively small.

[0049] Due to the tilting about axis K, the adjustment port 30 remains located near corner 16.1 of the stand housing 10. It is positioned slightly downwards with respect to the horizontal center plane of the stand housing 10, namely mirrored at corner 16.1. Nevertheless, even in this position of the rolling stand 1, i.e., the Y-arrangement, the adjustment port 30 is easily accessible from the same side and is therefore particularly suitable for efficient manual operation of the eccentric adjustment of adjacent rolling stands 1.

[0050] In Fig. 1B Furthermore, an inlet roller guide 60 is shown, which is attached to the frame housing 10 via the mounting elements 26.1-26.3, which are described above with reference to Fig. 1A were described and also on the in Fig. 1B The inlet side 15 of the frame housing 10 is shown and is attached. The inlet roller guide 60 is also adjustable by positioning the rollers of the inlet roller guide 60 closer or further away from the rolling axis 19 by means of a roller adjustment mechanism. For the roller adjustment mechanism, the inlet roller guide 60 is connected via a drive shaft 62 to a roller adjustment connection 64, through which a torque can be applied to the roller adjustment mechanism.

[0051] The roller positioning connection 64 is attached to the coupling clamping area 50.1 and the associated clamping strips 52 on the rolling stand 1. The arrangement of the mounting elements 26.1-26.3 and the coupling clamping areas 50.1, 50.2, 50.6 on the stand housing 10 allows the roller guide 60 to be attached to the stand housing 10 securely, precisely, and quickly.

[0052] Furthermore, in Fig. 1B A water line 66 of the inlet roller guide 60 can be seen. The water line 66 is connected to the water outlet opening 42.3, through which cooling water for the guide rollers of the inlet roller guide 60 leaves the rolling stand 10, the cooling water passing through a Fig. 1B Water is supplied to the rolling stand 10 via the water inlet opening 43.3 (not shown) when it is received in the stand mount and connected to a water connection of the stand mount.

[0053] Fig. 1C shows the preferred rolling mill stand 1 made of Fig. 1A in a position from Fig. 1A rotated 120° clockwise around the rolling axis 19. Due to the geometry of the rolling stand 1, the rolls 20.1-20-3 are in the same anti-Y arrangement as in the Fig. 1A oriented in the position shown, and the three drive-side ends 24.1-24.3 also run in the same directions and are located in the same positions, so that they can be coupled to the external motors for applying the rolling torque in the same way as in the position shown. Fig. 1A However, the employment connection 30 is, in comparison to Fig. 1A arranged rotated 120° clockwise.

[0054] This arrangement preferably serves to implement remote adjustment of the adjustment mechanism of the rollers 20.1-20.3 by an external motor. The position of the adjustment port 30 in the Fig. 1C The position of the rolling stand 1 shown allows, on the one hand, an external actuating clutch of an external actuating motor in the stand mount (not shown) to engage with the actuating connection 30 and actuate it in order to actuate the rolls 20.1-20.3. This differs from the position shown in Fig. 1A und 1B Positions shown.

[0055] The rolling stand 1 must be able to be inserted into and removed from a stand mount transversely to the rolling axis 19 in order to allow for quick maintenance. This requirement in turn means that the rolling stand must be in Fig. 1A-1D It must be inserted to the right into the frame mount so that the vertically standing roller 20.1 is in Fig. 1A und 1B or 20.2 in Fig. 1C und 1D The driving roller motor can engage with the respective drive-side end 24.1 or 24.2 because the roller motor for the roller 20.1 is located to the right of the roller axis 19. Fig. 1A und 1B or 20.2 in Fig. 1C und 1D is arranged to the right of the rolling axis 19 in order to be coupled to the drive-side end 24.1 or 24.2.

[0056] This in turn means that in Fig. 1A-1D No external adjusting motor may be located to the left of the rolling axis 19 and thus also to the rolling stand 1, i.e., in the insertion direction in front of the rolling axis 19. The positions from Fig. 1A und 1B are therefore configured for manual activation, i.e., operation of the activation port 30 by a person, and activation port 30 cannot be activated by automatic remote activation in this configuration, or only with disproportionate effort. The positions from Fig. 1C und 1D , in which the adjustment port is located behind the rolling axis 19 in the insertion direction, are configured for remote adjustment, i.e., actuation of the adjustment port 30 by an external motor.

[0057] In the Fig. 1C In the position shown, the rolling stand 1 rests on the sliding rails 40.4, while the roll 20.2 is the roll with a vertical plane of rotation, and the coupling clamping area 50.6 lies in a horizontal direction next to the rolling axis 19.

[0058] Fig. 1D shows the preferred rolling mill in the configuration from Fig. 1C , i.e., the configuration for remote positioning with positioning port 30 to the upper right. The position of the rolling stand 1 in Fig. 1D can be compared to those in Fig. 1C by tilting the rolling stand 1 about the axis K, which is inclined by 120° and thus also by 60° to the horizontal X-direction and runs through corners 16.1 and 16.4, by 180°. Analogous to the transition between the position of the rolling stand 1 from Fig. 1A and those from Fig. 1B This also occurs during the transition between the position of the rolling stand 1. Fig. 1C and those from Fig. 1D tilted 180° about axis K, which runs essentially parallel to the gear shaft of the adjustment connection 30. This tilting action does not change the orientation of the adjustment connection 30, and the rollers 20.1-20.3 exit the position described above. Fig. 1C shown anti-Y arrangement in the Fig. 1D The Y-arrangement shown and vice versa.

[0059] In Fig. 1D is like in Fig. 1B The inlet side 15 of the rolling stand 1 is shown. As also in Fig. 1B is an inlet roller guide 60 together with drive shaft 62 and roller adjustment connection 64 attached to the frame housing 10 via the mounting elements 26.1, 26.2, 26.3 and the coupling clamping area 50.2 with clamping strips 52.

[0060] In the Fig. 1D In the position shown, the rolling stand 1 rests on the sliding rails 40.3, while the roll 20.3 is the roll with a vertical plane of rotation, and the coupling clamping area 50.2 lies in a horizontal direction next to the rolling axis 19.

[0061] Due to the hexagonal shape of the stand housing 10, the rolling stand 1 can be positioned in the four in the Fig. 1A-1D The positions shown are all compatible with similar arrangements of the rolling motors in the rolling block with stand mounts. This allows for both Y-arrangements and anti-Y-arrangements of the rolls, and equally in two different configurations in terms of different orientations and arrangements of the adjustment connection 30: one for manual adjustment and one for remote adjustment. This flexibility is not achieved with the known rectangular stand housings because these can only be securely positioned and moved on or along one of the side surfaces of the stand housing, which dictates the orientation of the adjustment connection while maintaining the same orientation of the rolling motors.

[0062] Fig. 2A Figure 1 shows a perspective view of the entry side 15 of the preferred rolling stand 1, in which the three rolls 20.1, 20.2, 20.3 are arranged in the anti-Y arrangement and the adjustment port 30 of the eccentric adjustment is aligned horizontally to the side.

[0063] Along the outer surface 12 of the frame housing 10, recesses and bores are visible, which are for receiving the roller shafts, wherein in Fig. 2A Only the drive-side end 24.2 of the roll shaft belonging to the roll 20.2 is directly visible, and the adjustment connection 30 is provided. Furthermore, it can be seen that the clamping point 44.6 on the inlet side 15 facing the viewer is connected by a bolt to the clamping point 44.6 opposite on the outlet side 13, so that a clamping force applied to the clamping points 44.6 can be directed directly and stably between these clamping points 44.6 to fix the roll stand 1 in its stand mount without critically deforming or even damaging sensitive parts of the stand housing 10 through excessive local force application. The clamping points 44.2-44.5 are identically designed and connected to each other.

[0064] Fig. 2B shows how Fig. 2A the inlet side 15 of the rolling stand 1 from a different perspective than Fig. 2A , in which the drive-side end 24.1 of the roller shaft of the roller 20.1 can be seen.

[0065] The Figuren 3A und 3B Each image shows a side view of the rolling mill stand, in which the three rolls are arranged in an anti-Y configuration. Fig. 3A shows the corner 16.1 and the side surfaces 14.1 and 14.6 as well as the adjustment connection 30 and the drive-side ends 24.2 and 24.3 of the roller shafts of the rollers 20.2 and 20.3.

[0066] Fig. 3A Figure 1 further shows two water inlet openings 43.2, which can be connected to a water connection in the scaffold housing to receive water into the scaffold housing 10 and to discharge it through the water outlet opening 42.2, for example to supply it to a water pipe 66 or an inlet roller guide 60. Fig. 3A Furthermore, an air connection 41.2 can be seen next to the drive-side end 24.2, through which compressed air can be supplied to the frame housing 10 in order to protect the interior of the frame housing 10, in particular the gear parts located therein, for example the eccentric adjustment, from water ingress by means of overpressure.

[0067] Fig. 3B shows the corner 16.1 from Fig. 3A The opposite corner 16.4 and the side surfaces 14.3 and 14.4 opposite side surfaces 14.1 and 14.6. Furthermore, the sliding rails 40.3 and 40.4 can be seen on both the inlet side 15 and the outlet side 13. In the perspective of the Fig. 3B The drive-side end 42.1 of the roller shaft of the roller 20.1 can be seen at the front, where an air connection 41.1 and two water inlet openings 43.3 are also shown. REFERENCE MARK LIST

[0068] 1 Rolling stand 10 Stand housing 12 Outer side 13 Outward side 14.1, 14.2, 14.3, 14.4, 14.5, 14.6 Side surface 15 Inward side 16.1, 16.2, 16.3, 16.4, 16.5, 16.6 Corner 19 Rolling axis 20.1, 20.2, 20.3 Roll 21 Caliber 22 Rolling surface 24.1, 24.2, 24.3 Drive-side end 26.1, 26.2, 26.3 Mounting element 30 Adjustment connection 40.2, 40.3, 40.4, 40.5 Slide rail 41.1, 41.2, 41.3 Air connection 42.1, 42.2, 42.3 Water outlet opening 43.1, 43.2, 43.3 Water inlet opening 44.2, 44.3, 44.4, 44.5, 44.6 Clamping point 50.1, 50.2, 50.6 Coupling clamping area 52 Terminal strip 60 Inlet roller guide 62 PTO shaft 64 Roller adjustment connection 66 Water pipe K Tilting axis for switching between Y-arrangement and anti-Y-arrangement

Claims

1. Stand housing (10) for a rolling stand (1) for rolling metallic bars, wires or tubes along a rolling axis (19), wherein the stand housing (10) has an outer surface (12) with six side surfaces (14.1-14.6) which, viewed along the rolling axis (19), form edges of a regular hexagon, an inlet side (15) and an outlet side (13), wherein at least one water inlet opening (43.1, 43.2, 43.3) is arranged on three non-adjacent side surfaces (14.1, 14.3, 14.5), which is designed to direct water through the interior of the stand housing (10) to a water outlet opening (42.1, 42.2, 42.3) in the outlet side (13) or in the inlet side (15).

2. Scaffold housing (10) according to claim 1, wherein two parallel water inlet openings (43.1, 43.2, 43.3) are arranged on the three non-adjacent side surfaces (14.1, 14.3, 14.5), one of which is configured to direct water through the interior of the scaffold housing (10) to a water outlet opening (42.1, 42.2, 42.3) in the outlet side (13), and the other of which is configured to direct water through the interior of the scaffold housing (10) to a water outlet opening (42.1, 42.2, 42.3) in the inlet side (15).

3. Frame housing (10) according to claim 1 or 2, wherein the water outlet openings (42.1, 42.2, 42.3) are each located on a perpendicular bisector of an edge of the hexagon when viewed along the rolling axis (19).

4. Scaffold housing (10) according to one of the preceding claims, wherein an air connection (41.1, 41.2, 41.3) is further arranged on three non-adjacent side surfaces (14.1, 14.3, 14.5), which is designed to direct compressed air into the interior of the scaffold housing (10).

5. Scaffold housing (10) according to claim 4, wherein the three air connections (41.1, 41.2, 41.3) open into a common cavity, wherein the scaffold housing (10) is designed to prevent the outflow of compressed air from one of the air connections (41.1, 41.2, 41.3) by means of a valve.

6. Scaffold housing (10) according to claim 4 or 5, wherein the air connections (41.1, 41.2, 41.3) are arranged on the same non-adjacent side surfaces (14.1, 14.3, 14.5) as the water inlet openings (43.1, 43.2, 43.3).

7. Scaffold housing (10) according to one of the preceding claims, wherein one of the water inlet openings (43.1, 43.2, 43.3) and one of the air connections (41.1, 41.2, 41.3) are aligned parallel to each other and designed to be connected along the same direction.

8. Frame housing (10) according to one of the preceding claims, which further comprises three bearing bores for supporting a roller shaft each, wherein the bearing bores are rotationally symmetrical by a rotation of 120° about the roller axis (19) and are provided in one of the side surfaces (14.2, 14.4, 14.6) and wherein the water inlet openings (43.1, 43.2, 43.3) are provided in those side surfaces (14.1, 14.3, 14.5) which do not have bearing bores.

9. Scaffold housing (10) according to one of the preceding claims, which is closed and undivided and is in particular made from a monoblock.

10. Rolling stand (1) for rolling metallic bars, wires or tubes along a rolling axis (19), comprising: three rolls (20.1, 20.2, 20.3) mounted on a roll shaft and surrounding the rolling axis (19) in a star shape, together forming a caliber (21); and a stand housing (10) according to one of the preceding claims.

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