Stand housing including roller guides

Abstract

To provide a stand that enables more flexible use, adjustment constitution, and small designing in a roller.SOLUTION: A stand rolls a metal rod, a wire, and a pipe. The stand comprises: three rollers 20.1-20.3 arranged on one roller shaft to surround a rolling shaft in a star shape to form a caliber 21; a stand housing 10 having an outside 12 including six side surfaces 14.1-14.6 arranged to deviate at 60° rotation angle along the rolling shaft with respect to the rolling shaft as a center, and two end faces 15 opposing to each other, the stand housing forming a regular hexagonal shape; and a roller guide 60 including a universal shaft 62 which is mounted on one of the end faces of the stand housing, the universal shaft including a roller adjustment connector 64 and capable of adjusting a center of the roller guide, and mounted on the stand housing in one of corners 16.1-16.6 in a hexagonal shape.SELECTED DRAWING: Figure 1B

Description

Technical Field

[0001] The present invention relates to a stand for rolling long products of metal, specifically rods, wires, or pipes, along a rolling axis, the stand including a roller guide attached to the inlet side of the stand.

Background Art

[0002] Stands for rolling rod-shaped materials to be rolled are generally known in the production of metal pipes, rods, or wires. In this case, the material to be rolled can be rolled to a desired diameter in that the caliber is set appropriately. For example, the stand in the above technical field is known from Patent Document 1.

[0003] Generally, a plurality of stands are arranged continuously in a rolling mill. As a result, the material to be rolled elongates especially due to the difference between the roller speeds of individual stands and can be rolled to a smaller diameter.

[0004] Furthermore, the roundness of the material to be rolled is generally not sufficient after passing through one stand, which is because the cross-section takes a polygon-like shape due to the typically star-shaped arrangement of the rollers and their relatively small number, and the number of sides of the polygon corresponds to the number of rollers of the stand. For example, the material to be rolled rolled by a single three-roller stand has a cross-sectional shape that is not ideally round but rather approximately triangular.

[0005] The continuous stands are preferably arranged such that, in order to improve the roundness of the material to be rolled, the corners of the cross-section of the material to be rolled leaving the stand are contacted centrally by the rollers of the next stand, and as a result, the cross-section of the material to be rolled becomes round.

[0006] Therefore, in a rolling mill having, for example, four stands, the three rollers of the first and third stands are typically arranged in what is known as a "Y configuration," while the rollers of the second and fourth stands, respectively, which are positioned behind them, are arranged in what is known as an "inverted Y configuration" (λ). Due to the alternating arrangement of rollers and stands in the Y and inverted Y configurations, the corners of the cross-section of the material to be rolled are rounded by the rollers using the next stand, respectively, and the cross-section of the material to be rolled becomes rounded as a result.

[0007] In the Y configuration, the lower roller is oriented such that its roller shaft is horizontal in the line of sight of the rolling axis, i.e., its diameter extends vertically. In contrast, in the inverse Y configuration, it is the upper roller whose roller shaft is horizontal in the line of sight of the rolling axis, i.e., its diameter extends vertically. In both cases, the roller shafts of the two additional rollers are each positioned at an angle of 120° to the horizontal roller shaft. Of course, the orientation relative to the horizontal is entirely arbitrary, as only the relative position of the rollers to adjacent stands is important for the effect described here.

[0008] Switching between different configurations of a conventional rectangular stand is typically done by rotating it about 180° around the horizontal axis. However, as a result of this switching, in addition to other obstacles, the inlet side, i.e., the end face of the stand into which the material to be rolled enters, and the outlet side, i.e., the opposite end face from which the material to be rolled exits the stand, are swapped. In other words, the inlet side becomes the outlet side, and vice versa.

[0009] The formation of a rolling mill by arranging stands at the front and rear is typically done using stand bases, into which the stands are introduced and held. This allows for the replacement of stands from the rolling mill, for example, for periodic maintenance.

[0010] To prevent the material to be rolled from undergoing torsional movement between consecutive stands, and to prevent difficulties in controlling the point of application of the rollers along the periphery of the material to be rolled, roller guides are known, typically attached to the stand on the entrance side of the stand. This type of configuration is known, for example, from Patent Document 2.

[0011] Particularly effective roller guides demonstrate the possibility of centrally adjusting the caliber between infeed rollers using a roller adjustment mechanism. For this purpose, for example, a shaft, usually a universal shaft, is used to introduce roller adjustment torque via a roller adjustment connector, i.e., a coupling for the shaft, and this connection can be fixed to a stand.

[0012] Furthermore, there are two basic configurations for the roller adjustment connector: manual adjustment of the rollers and automatic adjustment, also known as remote adjustment. The placement of the roller adjustment connector on the operator side of the stand housing allows for good accessibility for manual operation of the roller stand connection from this side. However, in this arrangement, the roller adjustment connector cannot be easily operated and engaged automatically, i.e., by remote adjustment, because the motor required for this cannot be provided on this side without preventing the user from accessing the stand.

[0013] In prior art, modifying a stand in a way that ensures the roller guide is accurately positioned and set after switching between a Y configuration and an inverted Y configuration is a considerable effort, especially when it involves a roller guide that includes a roller adjustment connector. [Prior art documents] [Patent Documents]

[0014] [Patent Document 1] German Patent Application Publication No. 10015340 [Patent Document 2] Chinese Patent Application Publication No. 114130828 Specification [Overview of the project] [Problems that the invention aims to solve]

[0015] Against this backdrop, the object of the present invention is to provide a stand in the art that enables more flexible use within a rolling mill, and in particular, more flexible selection of both the position within the rolling mill and the roller adjustment configuration, simultaneously with the design of a smaller rolling mill.

[0016] In other words, the objective is to develop a stand in the above technical field in such a way that it can be positioned in different locations on the stand base, and each one is fitted with a roller guide that has central adjustment. [Means for solving the problem]

[0017] This objective is achieved by the stand described in claim 1. Advantageous embodiments of the present invention will become apparent from the dependent claims.

[0018] A stand for rolling long metal products, specifically rods, wires, or pipes, along a rolling axis, comprises three rollers, each positioned on a roller shaft to surround the rolling axis in a star shape and together form a caliber, the three roller shafts preferably mounted by eccentric bushings in bearing holes of the stand housing so that the radial spacing of the rollers from the rolling axis is adjustable; a stand housing having an exterior including at least six sides, each offset from the rolling axis by 60° rotations when viewed along the rolling axis, these sides together form a regular hexagon, at least in a virtual extension; and a roller guide, mounted on the end face of the stand housing, particularly on the inlet side, and including a universal shaft, the universal shaft includes a roller adjustment connector, via which the central adjustment of the roller guide is possible, the roller adjustment connector is mounted on the stand housing at the corner of the hexagon.

[0019] In this context, the side is the surface of the stand housing that laterally defines two end faces, specifically the front face called the inlet side and the rear face called the outlet side, through which the rolling axis extends. Viewed along the rolling axis, these end faces together form the lateral outer surface of the stand housing. These side faces are positioned so as to be offset by 60° around the rolling axis, i.e., adjacent side faces enclose an interior angle of 120°. These side faces thus form a regular hexagon, at least in its imaginary extension, which means that the projection of the stand housing along the rolling axis defines a polygon with at least six sides and angles. In this case, it is also possible to have rounded corners, chamfers or similar transitions between adjacent side faces of the hexagon, rather than sharp corners, and these transitions interconnect the straight side faces.

[0020] The sides of the stand housing may extend parallel to a contact surface, including or formed by, for example, a sliding rail, which functions as a contact surface, on which the stand can stand stably, particularly on the stand base. The sides do not have to be flat, but may rather include steps, protrusions, or recesses, as well as openings, which may be formed by multiple parts.

[0021] The star arrangement of rollers around the rolling axis means that each roller or its plane of rotation is positioned at a 120° angle to two adjacent rollers or their planes of rotation. This is also true for the roller shafts, which intersect outside the roller planes of rotation but not in the caliber. However, within the stand, each roller shaft is at a 120° angle to the other two roller shafts. This results in a synergistic effect between the roller arrangement and the geometric shape of the stand housing, which is particularly derived from the star arrangement of the three rollers on the one hand and the similar symmetry of the regular hexagon outside the stand housing on the other.

[0022] In this preferred stand, the distance of the rollers from the rolling shaft can be set to set the caliber by rotating the eccentric bushing, i.e., by eccentric adjustment as known from, for example, Patent Document 1.

[0023] Due to the number and arrangement of the sides of this stand housing, compared to a rectangular stand housing with four sides as known from the prior art, there is an advantage that the stands can be used in a modular manner at different locations at different positions in the rolling mill and in different configurations with respect to the adjustability of the roller guides. In other words, this stand can be used in a plurality of different orientations, such as Y-arrangement and reverse Y-arrangement, with and without roller guides, having different assignments of end faces as inlet side or outlet side, and in different versions of roller adjustment of the roller guides, for example manual or automatic versions. The number of stands to be kept available to the operator of the rolling mill is thereby reduced, because even after modification of the rolling mill with respect to the adjustability of the roller guides between manual and automatic, the same stands can be widely used throughout the rolling mill. Thus, the present invention achieves, together with a compact design of the rolling mill, a more flexible use within the rolling mill and in particular a more flexible selection of both the position in the rolling mill and also the roller adjustment configuration.

[0024] The stand housing preferably includes at least a pair of coupling clamp regions arranged at the hexagonal corners, with roller adjustment connectors attached to the at least a pair of coupling clamp regions, one of the pair of coupling clamp regions being arranged on one of the end faces and the other of the pair of coupling clamp regions being arranged on the other of the end faces.

[0025] The corner in the sense of the arrangement of the coupling clamp regions according to this preferred embodiment extends in the direction of the adjacent corner up to 25% of the peripheral distance from the adjacent corner, from the point where the sides meet or, in the case of a non-sharp corner, from the point where their virtual extensions meet. It is particularly preferred to arrange a coupling clamp region having a peripheral extension corresponding to the size of the coupling at the center of the regular hexagonal corner formed by the sides.

[0026] The coupling clamp area makes it possible to safely, reliably, and accurately mount the roller adjustment connector on the stand housing, which is particularly advantageous for switching the stand housing. This is because, for example, if the roller guide is intended to be arranged on the inlet side in both situations as usual, then it may sometimes be necessary to readjust it at this time.

[0027] In a preferred embodiment, the stand housing includes two pairs of coupling fastening areas, one of the two pairs being arranged at one corner of a hexagon, and the other being arranged at a corner of the hexagon that is offset by 120° rotation about the rolling axis. The roller adjustment connector is attached to one of these pairs. In other words, one of the pair of coupling clamp areas is arranged at the first corner, and the other of the pair is arranged at the second corner of the hexagon, which is adjacent but a corner along the circumferential direction.

[0028] As a result, switching between two different arrangements, particularly the Y-arrangement and the reverse Y-arrangement, can be done by tilting about an inclined axis that is inclined compared to the conventional horizontal inclined axis in the case of a rectangular stand housing, i.e., an inclined axis that extends through the corner arranged between the first and second corners and the center of the stand housing. In this case, the first and second corners exchange positions when switched, and the attachment of the coupling for the central adjustment of the roller adjustment connector, i.e., the roller guide, can be done securely, quickly, and accurately at the appropriate corners by the coupling clamp area. It is particularly advantageous if the stand housing additionally includes a bearing hole for the adjustment connector for the stand roller arranged in the area of the third corner. Switching between two different arrangements along the inclined axis that extends through the corner where the adjustment connector for roller adjustment is arranged in its vicinity is particularly efficient for the entire rolling mill.

[0029] The stand housing preferably includes three pairs of coupling clamp areas, one of which is located at one corner of the hexagon and two at the adjacent corners, with the roller adjustment connector attached to one of these pairs. In other words, in this preferred embodiment, a pair of coupling clamp areas is also located at a third corner between the first and second corners described above, so that a pair of coupling clamp areas is provided at each of the three adjacent corners.

[0030] As a result, when switching between two different configurations, particularly between the Y configuration and the inverted Y configuration, further flexibility is provided so that the third corner maintains its position by tilting around an inclination axis that extends through the center of the stand housing and the corner located between the first and second corners. The mounting of the roller adjustment connector, i.e., the coupling for central adjustment of the roller guide, can be done reliably, quickly, and accurately at each appropriate corner by the coupling clamp area. This is particularly advantageous if the stand housing also includes bearing holes for the adjustment connector for the stand rollers, located in the area of ​​the third corner. Switching between two different configurations along an inclination axis that extends through the corner in which the adjustment connector for roller adjustment is located in its vicinity is particularly efficient for the rolling mill as a whole.

[0031] The coupling clamp area preferably includes a screw hole for securing the coupling for the roller guide shaft. As a result, the coupling, i.e., the roller adjustment connector, can be securely and firmly attached to the stand housing.

[0032] In a preferred embodiment, the coupling clamping region is created on the end face. As a result, a more reliable and space-saving mounting of the coupling can be ensured.

[0033] The stand housing advantageously further includes a clamp rail that is screwed into the coupling clamp area, by which the coupling can be oriented and mounted. This enables simple and precise mounting and orientation of the coupling.

[0034] In a preferred embodiment, the stand housing includes at least one working material connection on its end face, and the roller guide includes a working material line connected to the working material connection on the stand housing.

[0035] Cooling water, for example, can be reliably and effectively supplied to the roller guide via a working material line connected to a working material connection on the stand housing, because this connection can be made before the stand is inserted into the stand base, allowing for corresponding and reliable design, as well as quick implementation for better accessibility. When the stand housing is received in the stand base, if the working material supply line is connected to the corresponding working material connection on or within the stand base, the working material, such as cooling water, can be guided through the stand housing, for example, by being introduced into the stand housing through a working material supply opening.

[0036] In this case, this preferred arrangement of the working material connection on the end face facilitates the supply of working material to the roller guide because the roller guide is mounted on the same end face and therefore the working material line can be guided in a geometrically simple manner.

[0037] In this way, the working material, especially the cooling water, can be reliably guided through the working material line of the roller guide, and for example, the rollers and the material to be rolled can be cooled using the cooling water.

[0038] The stand preferably further includes an adjustment connector for introducing adjustment torque to adjust the radial position of the roller shafts relative to the rolling shaft in order to set the caliber. In this case, at least two adjustment configurations are possible, namely remote adjustment via an external motor and also manual adjustment. For this purpose, an external motor or a suitable tool, such as a wrench, must be engaged with the adjustment connector to actuate it, i.e., rotate it. The rotational motion can be transmitted, for example, via a gearbox to one of the eccentric bushings of the stand. The rotational motion can be transmitted from the eccentric bushing to the other eccentric bushings of the roller shafts in a manner known in principle. In this way, all roller shafts can be adjusted synchronously via a single adjustment connector and the caliber can be set accordingly. Other adjustment mechanisms are also possible.

[0039] The adjustment connector is preferably located on the outside of the stand housing, i.e., on the outside in the lateral direction, at one corner of the regular hexagon. In this context, "at one corner of the regular hexagon" means that the adjustment connector is located closer to the corner than to the center of the side, i.e., closer to the transition between two adjacent sides. This arrangement of the adjustment connector allows for more flexible use of the stand. The stand can therefore rotate about 180° around an axis extending through the corner and the rolling axis, thereby allowing switching between a Y configuration and an inverted Y configuration without substantially changing the position of the adjustment connector.

[0040] Further advantages and developments of the present invention will become apparent from the following description of the figures and all of the claims. [Brief explanation of the drawing]

[0041] [Figure 1A] This is a diagram showing the preferred stand along the rolling axis in the inverted Y configuration of the first adjustment configuration. [Figure 1B] This is a diagram of the stand along the rolling axis in the Y configuration of the first adjustment configuration, as seen from Figure 1A. [Figure 1C] This is a diagram of the stand along the rolling axis from Figure 1A in the inverted Y configuration of the second adjustment configuration. [Figure 1D] This is a diagram of the stand along the rolling axis in the Y configuration of the second adjustment configuration, as seen from Figure 1A. [Figure 2A] This is a perspective view of the stand from the first viewpoint, as shown in Figure 1A. [Figure 2B] This is a second perspective view of the stand from Figure 1A. [Figure 3A] This is a side view of the stand from Figure 1A, showing the adjustment connector. [Figure 3B] This is another side view of the stand from Figure 1A, showing the opposite side of the adjustment connector. [Modes for carrying out the invention]

[0042] In the following diagram descriptions, the same reference number is provided for identical or corresponding elements, and redundant descriptions are largely avoided.

[0043] Figure 1A is a view of a preferred stand 1 for rolling a metal rod, wire, or pipe, extending in the Z direction along a rolling axis 19. In the embodiment shown herein, the stand 1 includes a stand housing 10, which has a regular hexagonal shape when viewed along the rolling axis 19. The outer surface 12 of the stand housing 10 is provided with six sides 14.1–14.6 of equal length, which are arranged rotationally symmetrically with respect to the rolling axis 19. Adjacent sides 14.1–14.6 merge with each other in a region called an angle 16.1–16.6. In this case, the angles 16.1–16.6 can be marked differently. These angles include abutment edges between the adjacent sides 14.1–14.6 that merge with each other at angles 16.1–16.6, which can be acute edges but are preferably chamfered or rounded. Small intermediate surfaces between adjacent sides 14.1–14.6 are also possible in the sense of a distinct, relatively wide chamfer, and in this context are still understood as corners 16.1–16.6. The inlet side 15 of the stand housing 10 (not shown in Figure 1A but shown in Figure 1B), and the outlet side 13 shown in Figure 1A, thus have an overall regular hexagonal shape, as in the stand housing 10 of this embodiment, which is characterized in particular by the fact that it has three pairs of sides 14.1, 14.4, 14.2, 14.5, 14.3, and 14.6, respectively, which are arranged parallel to each other. The stand housing 10 is manufactured as a monoblock.

[0044] A preferred stand 1 is designed such that the inlet side 15 (not shown in Figure 1A) resembles the outlet side 13 shown in Figure 1A, and all the features described below for the outlet side 13 are found on the opposite side of the stand housing 10 in the same or corresponding locations, as also shown below with reference to other figures.

[0045] Stand 1 further includes three rollers 20.1, 20.2, and 20.3 that surround the rolling axis 19 in a star shape. Rollers 20.1 to 20.3 each define a plane of rotation, which is at a 120° angle to each other and intersects at the rolling axis 19. The planes of rotation of rollers 20.1 to 20.3 are respectively positioned perpendicular to a pair of sides 14.1 to 14.6 of the stand housing 10. In the region of the rolling axis 19, rollers 20.1 to 20.3 form a caliber 21 between them. The caliber 21 is surrounded in particular by the respective roll surfaces 22 of rollers 20.1 to 20.3, the roll surfaces 22 of rollers 20.1 to 20.3 are formed centrally along the periphery of each roller 20.1 to 20.3 as concave grooves to provide the material to be rolled with the roundest possible outer contour. However, depending on the material to be rolled, the roll surface 22 can be designed differently, in particular as a flat surface or a convex surface. In Figure 1A, it can be seen that the rollers 20.1 to 20.3 are arranged in an inverted Y configuration, with the upper roller 20.1 positioned vertically and the two remaining lower rollers 20.2 and 20.3 positioned at an angle of 120° to the vertical orientation of the upper roller 20.1.

[0046] Rollers 20.1 to 20.3 are each fixed and positioned on a roller shaft, and are driven via the roller shaft. The axis of rotation of each roller shaft extends parallel to a pair of sides 14.1, 14.4, 14.2, 14.5, 14.3, and 14.6. The axis of rotation is further positioned laterally with respect to the rolling axis 19 and is arranged rotationally symmetrically or in a star shape around the axis. In Figure 1A, the axis of rotation of the roller shaft of the upper roller 20.1 is oriented in the X direction. The axes of rotation of the two other roller shafts are therefore inclined at angles of 120° and 240°, respectively, with respect to the axis of rotation of the upper roller shaft. For the roller shafts, only the drive-side ends 24.1, 24.2, and 24.3 are shown in Figure 1A, which project outward from one of the sides 14.2, 14.4, and 14.6 of the stand housing 10. As a result, each roller shaft can be adjacent to an external drive unit, which can then transmit its rolling torque to the roller shafts and thus to the rollers 20.1-20.3 via a coupling.

[0047] The roller shaft extends within the stand housing 10, and eccentricity adjustment means (not shown) for adjusting rollers 20.1-20.3 via the roller shaft is also located within the stand housing 10. The eccentricity adjustment means makes it possible to change the distance between the roller shaft and thus rollers 20.1-20.3 on the one hand and the rolling shaft 19 on the other hand in the XY plane of Figure 1A. As a result, different sizes of caliber 21 can be set, and wear on rollers 20.1-20.3 can also be compensated for for a constant caliber 21. The eccentricity adjustment means forms an adjustment mechanism for rollers 20.1-20.3.

[0048] The adjustment mechanism for rollers 20.1-20.3 can be operated from the outside by rotating the adjustment connector 30 which protrudes outward near angle 16.1. In the embodiment shown in Figure 1A, the adjustment connector 30 is designed to be both manually operable and automatically operated by a motor. The adjustment connector 30 is preferably connected to a rotatably mounted gear shaft extending inside the stand housing 10 and to a bevel gear that engages with the tooth segment of the eccentric bushing of the eccentric adjustment means, which in turn can transmit the rotational motion transmitted to it via the bevel gear to two other eccentric bushings, thus enabling synchronous adjustment of the rollers. The adjustment mechanism beyond the adjustment connector 30 is not shown in detail in Figure 1A.

[0049] The adjustment connector 30 is located near corner 16.1, and the gear shaft connected to the adjustment connector 30 extends parallel to the upper roller shaft in Figure 1A, i.e., in the X direction, with its drive end 24.1 protruding from the stand housing 10 on the opposite side. The adjustment connector 30 is thus positioned substantially opposite the drive end 24.1 of the roller shaft that extends parallel to the gear shaft. This relative positioning suggests that the adjustment connector 30 is not covered by the roll motor which is coplanar with one of the drive end 24.1 of the roller shaft, because the drive end 24.2 and 24.3 of the roller shaft adjacent to the adjustment connector 30 are oriented approximately 60° upward and downward, respectively, relative to the adjustment connector 30 and its gear shaft, so that the motor coupled to them forms a large free space between them, thereby allowing the adjustment connector 30 to be freely accessed.

[0050] In Figure 1A, the adjustment connector 30 is positioned near corner 16.1 and slightly offset upward with respect to the imaginary horizontal central plane of the stand housing 10. In this case, the distance along the Y-axis in Figure 1A between the adjustment connector 30 and the central plane extending parallel to the gear shaft, i.e., in the X-direction in Figure 1A, is less than 10% of the extending range of the stand housing 10 in the Y-direction, i.e., between the two opposing sides 14.2, 14.5 of the stand housing 10.

[0051] Figure 1A shows three mounting elements 26.1, 26.2, and 26.3 for a guide (not shown in Figure 1A) for the material to be rolled. The guide can be mounted on the exit side 13 of the stand housing 10, which is shown in Figure 1A. Mounting elements 26.1, 26.2, and 26.3 can also be positioned on the inlet side 15 (not visible in Figure 1A), where a guide for the material to be rolled can be mounted.

[0052] Guides for the material to be rolled can be, for example, roller guides, in particular roller guide 60, as shown as an example in Figure 1B, or funnel guides. The mounting elements 26.1, 26.2, and 26.3 are arranged in a star shape around the rolling axis 19, and opposite one of the rollers 20.1, 20.2, and 20.3 with respect to the rolling axis 19. The three mounting elements 26.1, 26.2, and 26.3 are each spaced at an angle of 120° around the rolling axis 19.

[0053] Furthermore, at adjacent corners 16.1, 16.2, and 16.6 of the stand housing 10, three coupling clamp areas 50.1, 50.2, and 50.6 are located on the exit side 13 of the stand housing 10, as shown in Figure 1A. Each of the coupling clamp areas 50.1, 50.2, and 50.6 is separated by two clamp rails 52. The three adjacent corners 16.1, 16.2, and 16.6 where the coupling clamp areas 50.1, 50.2, and 50.6 are located are corner 16.1, and the two adjacent corners 16.2 and 16.6, where the adjustment connector 30 is also located. The coupling clamp areas 50.1, 50.2, and 50.6 function to securely fasten the roller guide adjustment connector 64 (not shown in Figure 1A, but shown in Figure 1B) onto the stand housing 10. This relative arrangement of the coupling clamp areas 50.1, 50.2, and 50.6 at corner 16.1 of the adjustment connector 30 and the two surrounding corners 16.2 and 16.6 allows for a certain degree of flexibility in the arrangement and configuration of the stand 1 to be combined with the roller guide, and thus transferred to the entire system consisting of the stand 1 and the roller guide.

[0054] Figure 1A shows that the stand housing 10 includes four sliding rails 40.2, 40.3, 40.4, and 40.5 on the exit side 13, and these rails are arranged parallel to four adjacent sides 14.2, 14.3, 14.4, and 14.5. The sliding rails 40.2 to 40.5 are adjacent to each other and extend along the perimeter of the hexagonal stand housing 10 from corner 16.2, which includes the coupling clamp area 50.2, to corner 16.6, which includes the coupling clamp area 50.6. In the diagram of Figure 1A, the sliding rails 40.2 to 40.5 are not positioned on the sides 14.2 to 14.5, but rather are offset inward in the direction of the rolling axis 19. The sliding rails 40.2 to 40.5 extend peripherally along the sides 14.2 to 14.5 on one side, and on the other side, form a sliding surface that extends parallel to the rolling axis 19 and the sides 14.1 to 14.6, i.e., in the Z direction in Figure 1A, from the sheet plane. In this way, the stand 1 can be pushed onto the stand base (not shown) on the sliding rails 40.2 to 40.5, and in this case the sliding rails 40.2 to 40.5 can also be used as sealing elements. Thus, the sliding rails 40.2 to 40.5 can function as contact surfaces in four orientations of the stand 1, and are particularly intended to facilitate the reception of the stand 1 on the stand base. On the opposite entrance side 15 (not shown in Figure 1A), four sliding rails 40.2 to 40.5 are also arranged opposite to the illustrated sliding rails 40.2 to 40.5, so that a pair of sliding rails 40.2 to 40.5 on each opposing side can be used to stably mount the stand 1 onto the stand base.

[0055] Stand 1 further includes three water outlet openings 42.1, 42.2, and 42.3 on the outlet side 13 shown in Figure 1A. Cooling water intended for use, for example, for roller guides can therefore be introduced into the stand housing 10 through a water supply opening (not shown in Figure 1A) at one of the sides 14.1, 14.3, and 14.5, guided through the stand housing 10, and guided out through one of the water outlet openings 42.1, 42.2, and 42.3, from which it can be supplied to the roller guides.

[0056] Furthermore, on the exit side 13 shown in Figure 1A and also on the inlet side 15 (not shown in this figure), a total of five clamping points 44.2, 44.3, 44.4, 44.5, and 44.6 are located at the corners 16.2, 16.3, 16.4, 16.5, and 16.6 that define the side 14 where the sliding rails 40.2, 40.3, 40.4, and 40.5 are located, and these clamping points can absorb the clamping force from the stand base for fixing the stand 1.

[0057] Figure 1B shows the stand 1 from Figure 1A in a position that can be achieved by tilting the stand 1 by approximately 180° around an axis K that is horizontal, i.e., extends in the X direction, relative to the orientation of Figure 1A. Therefore, Figure 1B is a rear view of the stand 1 from Figure 1A, i.e., showing the entrance side 15. In this position of the stand 1, in contrast to the position shown in Figure 1A, the rollers 20.1 to 20.3 are arranged in a Y configuration.

[0058] The roller shafts are displaced parallel to the position of stand 1 from Figure 1A, and therefore their drive-side ends 24.1-24.3 protrude from the stand housing 10 in the same direction, but in different positions, specifically mirrored at their respective corners 16.2, 16.4, and 16.6. Thus, due to the aforementioned inclination, the illustrated stand 1 can be used in a rolling mill having both Y-configuration and inverted Y-configuration of rollers 20.1-20.3 on the same stand base, with the drive-side ends 24.1-24.3 of the roller shafts simply undergoing translational transition. This allows for a high degree of flexibility in the use of stand 1 in small rolling mills. The roll drive units coupled to the drive-side ends 24.1-24.3 of the roller shafts at the two positions of stand 1 can be positioned on the same side of the rolling axis 19 for each stand position where Y-configuration and inverted Y-configuration alternate, thereby keeping the overall spatial requirements of the rolling mill relatively small.

[0059] Due to the inclination around axis K, the adjustment connector 30 is still located near corner 16.1 of the stand housing 10. It is positioned slightly downward with respect to the horizontal central plane of the stand housing 10, specifically in a mirrored manner at corner 16.1. Nevertheless, even in this position of the stand 1, i.e., the Y configuration, the adjustment connector 30 is easily accessible from the same side, making it particularly suitable for efficient manual operation of the stand 1 adjacent to the eccentricity adjustment means.

[0060] Figure 1B further illustrates the roller guide 60, which is described above with reference to Figure 1A and is also present on the inlet side 15 of the stand housing 10 shown in Figure 1B, and is secured to the stand housing 10 via mounting elements 26.1 to 26.3. The roller guide 60 is also adjustable by a roller adjustment mechanism, which allows the rollers of the roller guide 60 to be positioned closer to or further away from the rolling shaft 19. In the roller adjustment mechanism, the roller guide 60 is connected to a roller adjustment connector 64 via a universal shaft 62, and torque can be applied to the roller adjustment mechanism via the roller adjustment connector 64.

[0061] The roller adjustment connector 64 is mounted on the stand 1 to the coupling clamp area 50.1 and the associated clamp rail 52. Due to the arrangement of the mounting elements 26.1-26.3 and the coupling clamp areas 50.1, 50.2, and 50.6 on the stand housing 10, the roller guide 60 can be mounted to the stand housing 10 securely, accurately, and quickly.

[0062] Furthermore, the water line 66 of the roller guide 60 is shown in Figure 1B. The water line 66 is connected to a water outlet opening 42.3, and cooling water for the guide rollers of the roller guide 60 leaves the stand 10 through the water outlet opening 42.3. When the stand is received by the stand base and connected to the water connection part of the stand base, the cooling water is supplied to the stand 10 by a water supply opening 43.3 (not shown in Figure 1B).

[0063] Figure 1C shows a preferred stand 1 from Figure 1A, rotated approximately 120° clockwise around the rolling axis 19 compared to the position in Figure 1A. Due to the shape of the stand 1, the rollers 20.1 to 20.3 are oriented in the same inverted Y configuration as shown in Figure 1A, and the three drive-side ends 24.1 to 24.3 extend in the same direction and are positioned in the same location. These drive-side ends 24.1 to 24.3 can be coupled to an external motor to apply rolling torque in the same manner as in Figure 1A. However, the adjustment connector 30 is positioned rotated approximately 120° clockwise compared to Figure 1A.

[0064] This arrangement preferably functions to implement remote adjustment of the roller adjustment mechanism for rollers 20.1-20.3 by an external motor. The position of the adjustment connector 30 at the location of stand 1 shown in Figure 1C allows the external adjustment coupling of the external adjustment motor to engage with the adjustment connector 30 at the stand base (not shown) and to actuate the adjustment connector 30 in order to adjust rollers 20.1-20.3. This is different from the case in the locations shown in Figures 1A and 1B.

[0065] Stand 1 must be able to be pushed into and pulled out of the stand base laterally relative to the rolling shaft 19, so that it can be quickly serviced. This requirement means that the stand in Figures 1A to 1D must be pushed to the right into the stand base so that the roll motors driving the vertical roller 20.1 in Figures 1A and 1B or the vertical roller 20.2 in Figures 1C and 1D can engage with their respective drive-side ends 24.1 and 24.2, respectively, because the roll motor for roller 20.1 is positioned to the right, next to the rolling shaft 19, in Figures 1A and 1B, and for roller 20.2, it is positioned to the right, next to the rolling shaft 19, in Figures 1C and 1D, and is coupled to the respective drive-side ends 24.1 and 24.2.

[0066] This consequently means that, in Figures 1A to 1D, the external adjustment motor cannot be positioned to the left of the rolling shaft 19 and therefore also next to the stand 1, i.e., in front of the rolling shaft 19 in the insertion direction. The locations from Figures 1A and 1B are therefore configured for manual adjustment, i.e., operation of the adjustment connector 30 by a person, in which the adjustment connector 30 cannot be operated by an automatic remote adjustment means, or can only be operated with excessive effort. The locations from Figures 1C and 1D, where the adjustment connector is located behind the rolling shaft 19 in the insertion direction, are configured for remote adjustment, i.e., operation of the adjustment connector 30 by an external motor.

[0067] At the location of stand 1 shown in Figure 1C, the stand is positioned on a sliding rail 40.4, while the roller 20.2 is a roller having a vertical rotation plane, and the coupling clamp area 50.6 is positioned horizontally next to the rolling shaft 19.

[0068] Figure 1D shows a preferred stand in the configuration from Figure 1C, i.e., a configuration for remote adjustment with an adjustment connector 30 in the upper right. The position of stand 1 in Figure 1D can be assumed relative to the position in Figure 1C by tilting stand 1 by approximately 180° around axis K, which is tilted by approximately 120° and therefore also 60° with respect to the horizontal, and this axis extends through angles 16.1 and 16.4. Similar to the transition between the position of stand 1 from Figure 1A and its position in Figure 1B, the transition between the position of stand 1 from Figure 1C and its position in Figure 1D also involves tilting by approximately 180° around axis K, and this axis extends substantially parallel to the gear shaft of the adjustment connector 30. As a result, the orientation of the adjustment connector 30 remains unchanged during this tilt, and rollers 20.1-20.3 transition from the inverted Y configuration shown in Figure 1C to the Y configuration shown in Figure 1D, and vice versa.

[0069] Figure 1D shows the entrance side 15 of the stand 1, as in Figure 1B. As in Figure 1B, the roller guide 60, including the universal shaft 62 and roller adjustment connector 64, is attached to the stand housing 10 via mounting elements 26.1, 26.2, 26.3 and coupling clamp area 50.2 using clamp rails 52.

[0070] At the location of stand 1 shown in Figure 1D, the stand is positioned on a sliding rail 40.3, while the roller 20.3 is a roller having a vertical rotation plane, and the coupling clamp area 50.2 is positioned horizontally beside the rolling shaft 19.

[0071] Due to the hexagonal shape of the stand housing 10, the stand 1 can be positioned in four locations as shown in Figures 1A to 1D, all of which are compatible with similar arrangements of roll motors in a rolling mill equipped with a stand base. As a result, both Y and inverted Y configurations of the rollers are possible, as are two different configurations in the sense of different orientations and arrangements of the adjustment connector 30, once for manual adjustment and once for remote adjustment. This flexibility is not achieved in the case of known square stand housings, because these stands stand firmly and can only be moved and displaced on or along one of the sides of the stand housing, thereby fixing the orientation of the adjustment connector in a certain orientation of the roll motor.

[0072] Figure 2A is a perspective view of the entrance side 15 of a preferred stand 1, in which three rollers 20.1, 20.2, and 20.3 are arranged in an inverted Y configuration, and the adjustment connector 30 of the eccentricity adjustment means is oriented horizontally.

[0073] Recesses and drilled holes are visible along the outer surface 12 of the stand housing 10, which are provided for receiving the roller shaft and adjustment connector 30, and in Figure 2A only the drive-side end 24.2 of the roller shaft belonging to roller 20.2 is directly identifiable. A clamp point 44.6 on the inlet side 15 facing the viewer is bolted to the opposite clamp point 44.6 on the outlet side 13, and it can be seen that the clamping force applied to the clamp points 44.6 can be directly and stably guided between the clamp points 44.6 in order to secure the stand 1 in the stand housing without severely deforming or even damaging the delicate parts of the stand housing 10 by the local introduction of excessive force. Clamp points 44.2 to 44.5 are designed and connected to each other in the same manner.

[0074] Figure 2B shows the entrance side 15 of stand 1 from a different perspective than Figure 2A, and the drive end 24.1 of the roller shaft of roller 20.1 can be seen.

[0075] Figures 3A and 3B are side views of the stand, respectively, with the three rollers oriented in an inverted Y configuration. Figure 3A shows corner 16.1 and sides 14.1 and 14.6, as well as the drive-side ends 24.2 and 24.3 of the roller shafts of the adjustment connector 30 and rollers 20.2 and 20.3.

[0076] Figure 3A further shows two water supply openings 43.2, which can be connected to a water connection in the stand base to receive water in the stand housing 10 and guide it out through a water outlet opening 42.2, for example, to supply water to the water line 66 of the roller guide 60. In Figure 3A, an air connection 41.2 is further visible next to the drive-side end 24.2, through which compressed air can be supplied to the stand housing 10 to protect the inside of the stand housing 10, in particular the gearbox components located inside, such as the eccentricity adjustment means, from penetrating water due to excessive pressure.

[0077] Figure 3B shows the opposite corner 16.4 from corner 16.1 in Figure 3A, as well as the opposite sides 14.3 and 14.4 from sides 14.1 and 14.6. Furthermore, sliding rails 40.3 and 40.4 are visible on both the inlet side 15 and the outlet side 13. In the perspective view of Figure 3B, the drive-side end 42.1 of the roller shaft of roller 20.1 is visible at the end face, and the air connection 41.1 and two water supply openings 43.3 are also shown. [Explanation of Symbols]

[0078] 1 Stand 10 Stand Housing 12 Outside 13 Exit side 14.1, 14.2, 14.3, 14.4, 14.5, 14.6 Side view 15 Entrance side 16.1, 16.2, 16.3, 16.4, 16.5, 16.6 angle 19 Rolling shaft 20.1, 20.2, 20.3 Laura 21 Caliber 22 Roll surface 24.1, 24.2, 24.3 Drive side end Features included in 26.1, 26.2, and 26.3. 30 Adjustment Connectors 40.2, 40.3, 40.4, 40.5 Sliding rails 41.1, 41.2, 41.3 Air connection section 42.1, 42.2, 42.3 Water outlet opening 43.1, 43.2, 43.3 Water supply opening 44.2, 44.3, 44.4, 44.5, 44.6 Clamping points 50.1, 50.2, 50.6 Coupling clamp area 52 Clamp Rails 60 Roller Guide 62 Universal Shaft 64 Roller adjustment connector 66 Water Line An inclined axis for transitioning between KY configuration and inverted Y configuration.

Claims

1. A stand (1) for rolling a metal rod, wire, or pipe along a rolling axis (19), Three rollers (20.1, 20.2, 20.3) are each positioned on a single roller shaft, surrounding the rolling shaft (19) in a star shape and together forming a caliber (21), A stand housing (10) having an outer surface (12) including at least six side surfaces (14.1, 14.2, 14.3, 14.4, 14.5, 14.6) that are offset by 60° around the rolling axis (19) when viewed along the rolling axis (19), and two end surfaces (13, 15) opposite to each other, wherein the side surfaces (14.1 to 14.6) form a regular hexagon at least along an imaginary extension, and the stand housing (10) A roller guide (60) is attached to one of the two end faces (13, 15) of the stand housing (10) and includes a universal shaft (62), the universal shaft (62) includes a roller adjustment connector (64), the roller guide (60) is capable of central adjustment via the roller adjustment connector (64), and the roller adjustment connector (64) is attached to the stand housing (10) at the corners (16.1, 16.2, 16.3, 16.4, 16.5, 16.6) of the regular hexagon, and the roller guide (60) is attached to one of the two end faces (13, 15) of the stand housing (10) and includes a universal shaft (62), the universal shaft (62) includes a roller adjustment connector (64), the roller guide (60) is capable of central adjustment via the roller adjustment connector (64), and the roller adjustment connector (64) is attached to the stand housing (10) at the corners (16.1, 16.2, 16.3, 16.4, 16.5, 16.6) of the regular hexagon, Includes stand (1).

2. The stand (1) according to claim 1, wherein the stand housing (10) includes at least one pair of coupling clamp regions (50.1, 50.2, 50.6) located at one corner (16.1, 16.2, 16.6) of the regular hexagon, the roller adjustment connector (64) is attached to the at least one pair of coupling clamp regions (50.1, 50.2, 50.6), one of the pair of coupling clamp regions (50.1, 50.2, 50.6) is located at one of the two end faces (13, 15), and the other of the pair of coupling clamp regions (50.1, 50.2, 50.6) is located at the other of the two end faces (15, 13).

3. The stand (1) according to claim 2, wherein the stand (1) includes two pairs of coupling clamp regions (50.2, 50.6), one of the two pairs (50.2, 50.6) is positioned at one corner (16.2, 16.6) of the regular hexagon, and the other pair (50.6, 50.2) is positioned at one corner (16.6, 16.2) of the regular hexagon that is offset by 120° around the rolling axis (19), and the roller adjustment connector (64) is attached to one of the two pairs (50.2, 50.6).

4. The stand (1) according to claim 2 or 3, wherein the stand (1) includes three pairs of coupling clamp areas (50.1, 50.2, 50.6), one of the three pairs (50.1) is positioned at one corner (16.1) of the regular hexagon, and the other two (50.2, 50.6) are positioned at the corners adjacent to the one corner (16.2, 16.6), and the roller adjustment connector (64) is attached to one of the three pairs (50.1, 50.2, 50.6).

5. The stand (1) according to claim 1 or 2, wherein the stand housing (10) includes at least one working material connection portion (42.1, 42.2, 42.3) on the end faces (13, 15), and the roller guide (60) includes a working material line (66) connected to the working material connection portion (42.1, 42.2, 42.3) on the stand housing (10).

6. The stand (1) according to claim 1, further comprising an adjustment connector (30) for introducing an adjustment torque to adjust the radial position of the roller shaft in order to set the caliber (21).

7. The stand (1) according to claim 6, wherein the adjustment connector (30) is located on the outer side (12) of the stand housing (10) at one of the corners (16.1 to 16.6) of the regular hexagon.

8. The stand (1) according to claim 6 or 7, wherein the adjustment connector (30) is manually operable.

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