MXPA00002237A - A rolling mill with roll deflection bi-dimensionally controlled - Google Patents

Abstract

A rolling mill with roll deflection bi-dimensionally controlled, mainly comprising:frames of the roll stand, roll groups and roll chocks. In order to minimize the roll deflection during rolling operation, the present invention provides a bi-dimensionally supporting system, consisting of frames, roll chocks and middle supporting device between said frames and roll chocks. The middle supporting device comprises screw-down means and horizontal blocks, as well as vertical blocks. The rolling mill with such structure makes it possible to suppress the roll deflection, thereby minimizing the tolerances in thickness of cross sections of the rolled strips or plates

Description

A LAMMATOR GON CURVATURA DI The invention relates generally to a laminator for producing plate and tape and, in particular, to a laminator in which the curvature of the roll is controlled in two-dimensional directions, in this way the laminated plate or tape has a very high precision of thickness in its cross section.

Af._ececS ©? Rt®s of Invemi IOCE Generally, a variety of kinds of rolling mills for rolling plate and strip, and they are classified according to the number of rollers in rolling of two heights, four heights mills and laminators of corsage, but the most commonly used rolling mills are the mills of any height, the HC mill and the corm mill, and so on. Rolling mill ios type double height, and four heights, there are many disadvantages, the main disadvantage is that when a rolled piece passes by the mill, since the pressing devices are located at the necks of the rollers, originates the rollers have a greater bending deformation, and the deformations of the rolls will result in errors in thickness in the cross section of the rolled piece (plate or rolled tape), thus affecting a very seriously the quality of the laminated piece. To solve the above problem, the method of increasing the diameter of the rollers has to be adopted and for a four-height rolling mill it also has to be Japanese 54-1259 discloses a branch mill that adopts a tower-type roller system. Of course, such laminators all have the advantage of high stiffness, but in a bunch mill, the portions of the laminating platform that come in contact with the supporting rolls still have deformation by bending under the rolling forces, causing in this way the deformation of the curvature of the rolls of work and affecting as a result the uniformity of the thickness of the laminated piece. The solution to the problem of deformation of the curvature of the roller to reduce or eliminate the effect of the deformation of the curvature of the roller on the The thickness of the laminated piece consists in the control of the shape of the gap between the working rolls in order to make the deformation of the curvature of the working rolls unaffected by the change of the rolling forces. A Chinese Patent (application number 89101393, CN issue number 1013250B) describes "A roller with small curvature and high rigidity rollers." To achieve the effect above, according to the patent, the support rollers in the outermost layer of! system tower type rollers are supported on the roll supports in the form of a beam multiple section, the rolling forces acting on the working rolls are transmitted respectively to brackets top and bottom roller through systems of rollers; the vertical component of the The force supported by the roller supports is transmitted to the platform of the laminator via descending or ascending action devices or similar elements such as bearings; the number of the devices of descending action or ascending action is at least two, and the positions of the devices of descending action or ascending action are in the intermediate region of the axis of the action. working roller on the roller supports. It can be appreciated, the solupión patent can make the deformation of the curvaíura of the roller supports in the vertical plane not vary significantly with the rolling forces, reducing esy how effectively the thickness error in the section cross section of the laminated piece. However, for branch mills with a tower-type roller system, the force transmitted from the work rolls towards the intermediate rollers have vertical and horizontal componentsIn addition, the peripheral support rollers also caused important horizontal force components. For the laminator described in Chinese Patent No. 89101393, the horizontal force component of the roller supports have a horizontal curvature deformation, thus causing the intermediate rolls as well as the work rolls to have a greater deformation of curvature. As previously discussed, in order to solve the problem of the deformation of curvature of the work rolls of a bunch mill, it is not only necessary to reduce the deformation of curvature produced by the vertical force component, but also that produced by the component of horizontal force, is or is, is forced to solve the problem of deformation in two-dimensional directions, so that a work roll can be held straight and that the thickness accuracy in the cross section of the piece laminated be increased.

Therefore, the invention is focused on solving the problem of two-dimensional curvature deformation of the rollers, that is, the invention can reduce not only the curvature deformation in the vertical direction, but also in the horizontal direction. Accordingly, the object of the invention is to provide a high precision laminator, compared to the prior art, when the laminator of the invention is subjected to the rolling force, the curvature deformation of the rolls can be greatly reduced, resulting in the reduction of the thickness error in the cross section of the laminated piece and the increase in the dimension accuracy of the laminated piece. To achieve the aforementioned effect, the embodiment of the invention is as follows: the laminating machine for laminating plate and tape comprises a faming platform, upper and lower roller systems and a upper roller support and lower roller support. The rolling platform is of a frame shape and is capable of supporting rolling forces, and all parts and components of the rolling mill, such as roller systems, are incorporated in the frame. The roller system is arranged so that it is of a tower type configuration. The roller system is composed of three parts, an idler roller, support rollers and non-full rollers; the upper and lower support rollers disposed in the outermost layer of the roller system are resiliently supported on the upper and lower roller supports in the form of a multiple section beam, and the upper roller support can be displaced upwards and down if necessary to adjust the amount of separation between the rollers. The laminator is characterized in that the lamination playaform, the roller sockets and the intermediate support means between the frame and the roller supports commonly comprise a two-dimensional support system. The intermediate support means are disposed on at least one of the upper and lower roller supports and are arranged in the region of the middle part of the axle of the roller body of the roller with its length being no greater than the length of the body. of the roller roller of the work. The intermediate support means include pressing devices and horizontal cushions; there are at least two pressing devices disposed above the upper roller support and placed on the rolling platform, the lower roller support is supported by horizontal bearings, and the pressing devices as the horizontal bearings are disposed in the region of the middle part of the body axis of! roller of the roller on the roller support. Also present in the invention are upper and lower vertical bearing assemblies along a horizontal direction, which are respectively positioned between the two lamellar walls of the upper and lower roller supports and supported on the side walls of the lamination playaform. , and the upper and lower vertical bearing assemblies are respectively composed of two wedge-shaped repairers to prevent deformation of curvature due to the horizontal force component. The shape of the lamination plate is coupled with that of the roller supports.

The modalities of the invention will be described in detail and in relation to the accompanying drawings, and the object of the invention will be clearer from the open type corsage; Figure 3 is a schematic view of a conventional bunch mill described in a Japanese Patent; Figure 4 is a sectional front view of the first embodiment of the laminator according to the invention; Figure 5 is a sectional view of the first embodiment of the invention taken along line A-A in Figure 4; Figure 6 is a sectional view of the first embodiment of the invention taken along line B-B in Figure 4; Figure 7 is a sectional view of the first embodiment of the invention along the line C-C in Figure 4; Figure 8 is a sectional front view of the second embodiment of the laminator according to the invention; Figure 9 is a sectional view of the second embodiment of the invention turned along the line D-D in Figure 8; Figure 10 is a sectional front view of the third embodiment of the invention; Figure 11 is a sectional view of the third embodiment of the invention turned along the E-E line in Figure 10.

Detailed Description di® Has I Figures 1-3 are schematic visions showing the conventional laminators commonly used. Due to their structures, it is inevitable for the rollers to separate during rolling, and this will directly affect the quality of the laminated part. For example, the surface accuracy of the laminated part, especially the precision of the plate thickness, can not satisfy the requirements. Figures 4-7 show the first rftodalidad of the high precision laminator with curvatures being conirred in two-dimensional form according to with the invention As can be seen in Figure 4, a two-dimensional support system comprises a frame 10, roller supports 4 and 5, and intermediate support means provided between the frame and the roller supports. In frame 10, the main parts and components are provided, such as the upper and lower roller systems, upper and lower roller supports, and eic. The frame 10 can be formed in an integral one, or it can be formed by several parts connected together by welding or other joining methods. The upper and lower roller systems are composed respectively of an idler roller 1, intermediate rollers 2 and support rollers 3, which together form a irere roller system. The laminated piece is designated by 12. The support rollers 3 in the outermost layer of the roller system are supported in the form of a beam of multiple sections, generally a beam of two or more sections (refer to Figure 5), on the upper and lower roller supports 4 and 5. In the intermediate support means, the pressing devices 6 are provided between the upper roller support 4 and the inner wall supepor the frame 10, the pressing devices 6 are insulated on the roller support 4 and are located in the middle region of the roller shaft, generally located within the length of the roller body of the work roll. The pressing devices 6 can move up and down, causing the upper roller support 4 to move up and down in the integral frame 10 to adjust the space between the rollers. In order to carry out the printing operation, the pressing devices can also be equipped with an automatic sheet thickness control device (not shown in the figures) in order to accurately detect the magnitude of the rolling force and the separation between the two. the rollers. Therefore, to obtain high precision products. are placed under the roller support and are located in the mid-axis region? roller, generally located within the length of the roller body of the roller. Obviously, the lower roller support 5 is supported by the horizontal bearings 7. The horizontal bearings 7 can be of different sizes, that is, the thickness of the horizontal bearings can form a series of thicknesses. The adjustment of the rolling line can be done using horizontal bearings 7 with different thickness. And also, the horizontal bearings 7 can be replaced by a hydraulic device or a screw device. Referring to Figures 4, 6 and 7, it can be clearly seen in Figure 4 that, in addition to being supported vertically by the pressing devices 6, the upper roller support 4 is supported horizontally by two pairs of upper vertical bearing assemblies. 8, which are disposed between the inner side wall of the frame 10 and the upper roller support 4. The upper vertical cushion assemblies 8, 8 are respectively on the left side and the right side of the upper roller support 4, and located in the middle region of the work roll axis, being less than the length of the roll body. Each of the upper vertical cushion assemblies 8 is composed of two wedge-shaped coupling members with opposite inclinations (refer to Figure 6). In a similar way, the lower roller support 5 is not only supported vertically by the horizontal bearings 7, but is also supported horizontally by sets of lower vertical cushions 9,9 which are disposed between the internal walls of the frame 10 and the lower roller support 5. The lower vertical cushion assemblies 9, 9 are respectively on the left side and the right side of the lower roller support 5, and located in the middle region of the axis of the work roll, A- being within the length of the body of the roller. The set of lower vertical bearings 9 is also composed of wedge-shaped coupling members (see Figure 7). The lower roller support 5, in conjunction with the horizontal bearings 7 and the lower vertical cushion assemblies 9, is supported on the frame 10, and the upper roller support 4, together with the upper vertical cushion assemblies 8 and the devices of 6, are supported on the frame 10. Due to the aforementioned construction of the rolling mill of the invention, the curvatures of the rollers are substantially reduced. This is because the frame, the roller supports and the intermediate support means enclose the frame and the roller supports of the laminator jointly form a two-dimensional support system, ie providing support in both vertical and horizontal directions, and specifically, the upper and lower roller supports, the support rollers, intermediate rolls and idler rolls are supported in both vertical and horizontal directions. The rolling forces shared by the idler rollers are transferred to the support rollers through the idler rollers and intermediate rollers. The support rollers comprise several back-up bearings mounted on an axle (refer to Figure 5). Therefore, the outer ring of the bearings rotates when the rolling force is transmitted to the outer ring, and the rolling force is then transmitted to the upper roller support through the bearings. The vertical force component finally reaches the upper inner wall of the frame via the pressing devices, and the horizontal force component reaches the side walls of the frame via the sets of vertical pads. Similarly, the rolling force supported by the idler roller is transmitted to the lower roller support via the intermediate rollers and the support rollers, with the vertical force component being transmitted to the lower inner wall of the frame via the horizontal bearings. 7 and the horizontal force component being transmitted to the laminar walls of the frame via the vertical pads sets 9. The pressing devices, the horizontal pads and the sets of vertical pads on the located in the middle region of the axis of the length of the body of the roller. Therefore, the laminator of the @h guarantees the proper form, that is to say, the linearity of the generation line of the work roll not only in the vertical plane but also in the horizontal plane, as a result, the deformation of curvature of the The floor roller basically does not vary with the rolling force. Therefore, the deformation of the roll curvature is greatly reduced, resulting in the reduction of the thickness error of the laminated tapes. The adjustment of the gap between the rollers is made by moving the upper rhodium support 4 up and down in the frames of the frame 10, the upper roller support is driven by the pressing devices. The laminator of the mode can be placed with the upper sewing down and, consequently, the pressing devices become devices that act upwards. Such modification can have the same effects. The hydraulic pressing devices can also be replaced by a screw device. Figures 8-9 show the second embodiment of the invention. The work roll also comprises a two-dimensional support system composed of a rolling platform, roller supports and intermediate support means between the lamination playaform and the roller supports. The particular components comprise the frame 10, the upper roller support 24, e! lower roller support 25, bearings 21 and the roller system, each of the roller systems includes a work roller 1, intermediate rollers 2 and support rollers 3. As in the first embodiment, the roller system also forms a The idler roller system, and the support rollers 3 in the outermost layer are also respectively supported on the roller supports 24 and 25 in the form of multi-section beams. The second embodiment differs from the first embodiment in that upper vertical bearing devices 8 are disposed in the intermediate support means in the first embodiment, and lower bearings 21 in place of the horizontal bearings 7 and lower vertical cushion assemblies 9. This It will be described specifically in the book. Referring to Figure 8, it can be seen in the figure that the lower roller support 25 is supported on the frame 10 by two bearings 21 which are arranged obliquely between the frame 10 and the lower roller support 25, the walls The external sides of the upper and lower roller supports respectively have an oblique surface formed thereon, the oblique surface sloping downwards and encountering the respective upper surface. The upper roller support 24 is supported on the frame 10 by means of the pressing devices 26, 27, which, as shown in the figure, are obviously composed of screws 27 and bearings 26. The pressing devices are arranged in symmetrically on the roller support 24 (refer to Figure 9). Each bearing 26, when viewed from the brake, has an oblique surface that engages one of the oblique surfaces on the upper roller support 24. The threads on a pair of screws 27 are used for adjustment, it can be seen in the figure that they can move the upper roller support 24 up and down, thereby causing the roller system to move up and down to adjust the separation between the rollers. When the rolling force results, including the horizontal and vertical force components acted on the upper roller support 24, the force is transmitted to the screw-bearing assemblies 26, 27 and finally reaches the frame 10.; The shape of the frame 10 should be coupled with that of the roller supports 25, 24. Since the upper roller support 24 and the lower roller support 25 have oblique supporting surfaces, the frame 10 can support the horizontal force and the force vertical. The pressing devices 26, 27 and the bearings 21 in the transmission path of the force are all located in the intermediate region of the axis of the work roll, being within the length of the roll body of the work roll, therefore , the deformation of curvature of the frame in both directions, the roller supports had the rattles of the frame. As a resulfado, the bi-dimensional support system reduces the curvature deformation of the work rolls. Figure 9 is a visia in the oma and long section of line DD in Figure 8. The structure of the second mode and the shapes of the various components are clearly shown in Figure 8 and Figure 9. In addition, the number of the pressing devices can be more than two. The laminator of the modality can be placed with the upper side down, and the same effects can be obtained. The screw device in the mode can be replaced by hydraulic cylinders or the like. Figures 10 and 11 are schematic visions of the third embodiment. It can be seen from the figures that the lower roller support 35 and the lower bearings 31 have the same directions as those of the second embodiment. The difference between them lies in the arrangement of the pressing devices 36, 37. The pressing devices 36, 37 are insulated obliquely with respect to the central axis of the frame 10 on the upper surface of the frame 10 and are disposed oppositely. , causing in this way that the complete laminator arrangement is more rational. In the third embodiment, the transmission of the rolling forces supported by the rolling mill and the force loading members of the vertical and horizontal force components are the same as those in the second embodiment, and the principles and functions of the support system Two dimensions to reduce the curvature deformation of the working rolls are also substantially the same, and this will not be repeated here. Compared to the prior art, the invention has the following advantages: Since the laminator of the invention has an integral frame, the shape of which corresponds to the shape of the roller supports and the frame is of high rigidity; The roller bearings on the roller supports and the frame or the adjustment devices for the separation are located in the middle region of the roller of the roller in the range of the length of the roll body of the work roll, and make up a system of Two-dimensional support, thus, the shape of the generation line of the work rolls is guaranteed not only in the vertical plane but also in the horizontal plane. As a result, the flexural deformation of the idler rolls basically does not vary with the rolling force, resulting in the undesirable reduction of the thickness error of the laminated kines. The laminator of the invention can simplify the design of the roll shape (bending) and the conirol of the shape of the roll during rolling. The bending deformation of the rolling rollers of the rolling mill of the invention occurring in the horizontal and vertical directions do not vary with the rolling forces. Since among the various factors associated with bending, such as bending deformation, crushing deformation, thermal expansion, and wear, the most important-flexural deformation-can be left out of consideration and thermal expansion and wear are Also factors of very slow change, the design of the roll shape and the roll shape of the roll during the rolling can be greatly simplified. In addition, the "roller pitch" formed by the bending deformations of the two bead rollers in a conventional rolling mill is eliminated, thereby facilitating the transverse flow of the metal and being Advantageous for laminating high-precision kinetics with wedge-shaped spaces, and the phenomenon of "edge attenuation" of the kinetics in improvement in an important way. In the above embodiments of the invention, the number of the rollers in the roller system is 12, but the roller systems may have different numbers of rollers. In addition, the different roller supports can be coupled with one another, and can also be coupled with roller supports or roller systems in a conventional rolling mill. The invention is not limited to cold rolling mills, and is also applicable to hot rolling mills for rolling cininia. tf_a_r? ¥ While preferred embodiments of the invention have been described, various modifications to the invention may occur to persons skilled in the art without departing from the scope of the invention of the appended claims of the invention. ß ^? JKSUSií ?? tß?

Claims (3)

1. A lamination machine for sheet and plate, essentially comprising a lamination plate (10), an upper roller system and a lower roller system, and an upper roller support and a lower roller support, said roller systems The upper and lower parts are disposed in such a way that they have an igular configuration, wherein the frame, the roller supports, and the intermediate support means surround the frame and the roller supports of the laminator together form a two-dimensional support system, the intermediate support means being disposed on at least one of the upper and lower roller supports and disposed in the middle region of the body axis of a roller of the work roll with its length not greater than that of the body of the roller of the work roll .
2. 2. A laminator as claimed in claim 1, wherein said intermediate support means comprises pressing devices (6) and horizontal bearings (7), the pressing devices and the horizontal bearings are mounted respectively on the inner walls above and below. bottom of the frame (10) of the laminator and the end surfaces of the roller supports (4, 5), said intermediate support means further comprise sets of vertical bearings (8, 9) which are respectively placed vertically between the laminar walls internally of the rolling plaform (10) and the two lateral surfaces of the roller supports (4, 5) and are tightly aligned with them, thereby causing the rolling platform (10) to form a two-dimensional support with relation to the roller supports. 3. A laminator as claimed in claim 1, wherein said frame (10) is an intact cast frame, or the frame is assembled to be an integral piece by means of simple joining methods such as welding, with formed windows on the external walls. 4. A laminator as claimed in claim 1, wherein the support rollers (3) are disposed in the outermost layer of said systems. í? tw; and? j] lll_ ___ i_5___ of rollers, the support rollers are stapled in the form of a multi-section beam generally with more than two sections. A laminator as claimed in claim 2, wherein said pressing device (6) is capable of vertically moving the roller support up and down along the center axis of the frame (10) in order to adjust the separation Wind the rollers. 6. A laminator as claimed in claim 2, wherein said sets of vertical bearings (8, 9) are composed of two pairs of wedge-shaped members, the mating surfaces of each pair of wedge-shaped members being they adjust carefully, enlighten them. 7. A laminator as claimed in claim 1, wherein said intermediate support means comprises pressing devices (26, 27, 36, 37) and bearings (21, 31) that are respectively arranged to enclose the internal walls of the frame ( 10) and the roller supports (24, 25, 34, 35). 8. A laminator as claimed in claim 1, wherein two external lamellar walls of each of said roller supports (24, 25, 34, 35) respeci vely have an oblique surface formed thereon and which slopes down to the inside and It is found with the respective upper surface.
3. 3. A laminator as claimed in claim 7, wherein said pressing devices (26, 27, 36, 37) are screw-bearing assemblies that include a screw (27, 37) and a bearing (26, 36) . 10. A laminator as claimed in claim 9, wherein said cushions (26, 36) have an oblique surface that engages with the corresponding oblique surface of the roller support that inclines toward the inside. A laminator as claimed in claim 7, wherein said bearings (21, 31) are tightly adjusted to the lower oblique internal surfaces of the frame (10) and the oblique surfaces of the roller supports. Í2. A laminator as claimed in claim 9, wherein a plurality of said screw-bearing assemblies (26, 27, 36, 37) are arranged parallel to the center axis (IO) and are uniformly distributed over each other. both sewn from the central axis. 13. A laminator as claimed in claim 9, wherein said screw-bearing assemblies (26, 27, 36, 37) are disposed obliquely and symmetrically with respect to the central axis of the frame (10). A laminator as claimed in claim 2 or 7, wherein said pressing devices and screws (27, 37) consist of hydraulic cylinders. A precision laminator with the curvature of the roller being conirred in two dimensions, which mainly comprises a lamination playaform, roller systems and rod supports. * To minimize deformation of the roll curvature during rolling, the The rolling mill of the invention is also provided with a two-dimensional support system which is commonly composed of the rolling plaform, the roller supports and intermediate support means between the rolling plaform and the roller supports. The intermediate support device comprises pressing devices and horizontal bearings, as well as vertical bearing assemblies. The configuration of the laminator resulted in a large reduction of the curvature, thus decreasing the thickness error of the cross-section of the laminated plate or tape.