CN1268078A - A rolling mill with roll deflection bi-dimensionally controller - Google Patents

Abstract

A high-precision rolling mill for bidimensionally controlling the roller deflection, mainly includes a rack, a roller tie and a roller seat. In order to have a minimum flexural deformation roll in the rolling process of the roller, the inventive mill is also provided with a bidimensional support system, which is composed of a rack, a roller seat, and a middle support device between the rack and the roller seat. The said middle support device includes a pressure device, a horizontal pad and a vertical pad group. The structure of the mill greatly reduce the roller deflection, thereby reducing the cross-sectional thickness error of the rolling strips or plates.

Description

A rolling mill with roll deflection bi-dimensionally controller

Roll deflection bi-dimensionally controlled

High-precision gift machine technical field

The present invention relates generally to a kind of milling train for being used to produce Strip, the milling train of roll bending is controlled more particularly, to a kind of two-dimensional direction, so that the Strip of rolling has the characteristic of very high transversal thickness precision.Background technology

The milling train species of usual strips or plates is more, and being distinguished from roll number has two rollers, four-roller and multiple roll, but milling train conventional at present has four-high mill, HC milling trains and multi-roll mill etc..For two rollers, four-high mill, in the presence of many shortcomings, it is topmost to have the disadvantage when rolled parts is by support, at the roll neck for being located at roll due to screwdown gear, therefore roll is made to produce larger flexural deformation, the deformation of roll certainly will cause the transverse gage deviation of rolled parts (Strip of rolling), thus have a strong impact on the quality of rolled parts.The method for having to take increase roller diameter to solve the above problems, the method for also having to take increase support roller diameter for four-roller letter machine.But, with the increasing of roller diameter, necessarily cause sharply increasing for roll-force, and the change of roll-force result in the increase of roll flexural deformation in turn.

Cluster mill includes overall memorial archway type and open-type (such as Fig. 1, shown in 2), Japanese Patent Laid-Open No. Sho 54-1259 discloses a kind of multi-roll mill, which employs tower rollers system, certainly, this several milling train all has the advantages that rigidity is big, but the position that the frame and support roller in multi-roll mill are in contact, deflection deformation is still produced in the presence of roll-force, therefore causes the deflection deformation of working roll, therewith the uniformity of influence of rolled part thickness.

To solve the deflection deformation of roll, influence of the roll deflection deformation to rolled parts thickness, the i.e. shape to the roll gap that works is reduced or eliminated and is controlled, working roll deflection deformation is not changed by roll-force is influenceed.On July 24th, 1991 discloses " a kind of roll small deflection, stiff mill ", and the Chinese Patent Application No. is 89101393, and authorization number is CN 1013250B.To achieve the above object, the outer layer support roller of tower rollers system is supported on roller base by the invention in the form of multistage beam, the roll-force of effect on the work rolls, through roller system be dispersedly delivered to above and below on two roller bases, the vertical stress component that roller base is born is delivered in frame by like parts such as pressure or dozing device or cushion blocks, the position of pressure or the quantity at least two of dozing device, pressure or dozing device is in roller base top working roll axis near middle.As can be seen that the embodiment of the patent can make the deflection deformation of roller base on the vertical plane, substantially not with rolling The change of power processed and change, therefore the thickness error on rolled parts cross section can be efficiently reduced.But, for the multiple roll letter machine of tower rollers system, there is vertical stress component and horizontal component in the power that working roll passes to intermediate calender rolls, edge supports roller is caused to be also subjected to sizable horizontal component, for the milling train disclosed in Chinese patent 89101393, its horizontal component causes roller base to produce horizontal deflection deformation, certainly will so cause intermediate calender rolls until working roll produces larger deflection deformation.

In summary, in order to more preferably solve the working roll deflection deformation of multi-roll mill, not only need to reduce the deflection deformation that vertical stress component is caused, and also need to reduce the deflection deformation that horizontal component is caused, that is the deformation of two-dimensional directional must be solved, working roll can be made to keep straight, the thickness and precision on the cross section of rolled parts is improved.The purpose of invention

Therefore, the present invention is that is, milling train of the invention can not only reduce the deflection deformation of vertical direction, and can reduce the deflection deformation of horizontal direction in order to solve the problems, such as the two-dimentional deflection deformation of roll.It is therefore an object of the present invention to provide a kind of high-precision rolling mill, the milling train is born after roll-force, compared with prior art, the deflection deformation that roll is produced is greatly reduced, therefore reduces the error of rolled parts cross sectional thickness, improves the dimensional accuracy of rolled parts.Technical solution

To achieve the above object, embodiment of the present invention is as follows, a kind of milling train of milled sheet Tapes materials, by frame, on, lower roll system and on, lower roller base is constituted, framework shape is made in frame, it can bear roll-force, and whole gift machine parts such as roller system can be arranged in it, the placement of roller system turns into pyramidal structure, it is by working roll, support roller and the part of intermediate calender rolls three composition, it is placed in the upper of roller system outer layer, lower backing roll is respectively supported in the way of multistage beam, on lower roller base, topping roll seat can as needed and on, lower movement, to adjust roll gap size.The milling train is characterised by that the frame of gift machine, roller base, the intermediate strutting device between frame and roller base collectively constitutes two dimension support system.Intermediate strutting device is arranged at least one in upper and lower roller base, and is arranged in working roll body of roll axis near middle, its of length no more than working roll barrel length.The intermediate strutting device includes screwdown gear and horizontal cushion block, screwdown gear is at least two, it is arranged on the top of topping roll seat and is placed in frame, lower roller base is supported by horizontal cushion block, screwdown gear and horizontal cushion block are arranged in the near middle of roller base top working roll body of roll axis, the present invention is additionally provided with the upper and lower vertical cushion block group of horizontal direction, they are respectively provided between the two side of upper and lower roller base, it is supported on the side wall of frame, upper and lower vertical cushion block group is respectively by two wedge shapes Part is constituted, to prevent due to the deflection deformation that horizontal component is produced.The shape of the rolling-mill housing is engaged with the shape of roller base.Brief Description Of Drawings

Embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, passes through following explanation, it will the purpose of the present invention is more had a clear understanding of：

Fig. 1 is sendzimir mill schematic diagram in the prior art；

Fig. 2 is prior art centre-shed multi-roll mill schematic diagram；

Fig. 3 is the multi-roll mill schematic diagram of Japanese Patent Publication in the prior art；

Fig. 4 is the positive schematic cross-sectional view of milling train first embodiment of the present invention；

Fig. 5 is first embodiment of the invention A-A along along Fig. 4 sectional view；

Fig. 6 is first embodiment of the invention B-B along along Fig. 4 sectional view；

Fig. 7 is first embodiment of the invention C-C along along Fig. 4 sectional view；

Fig. 8 is the positive schematic cross-sectional view of milling train second embodiment of the present invention；

Fig. 9 is second embodiment of the invention D-D along along Fig. 8 sectional view；

Figure 10 is the positive schematic cross-sectional view of third embodiment of the invention；With

Figure 11 is sectional view of the 3rd embodiment shown in Figure 10 along E-E.Realize the best mode of the present invention

Fig. 1-3 is milling train schematic diagram usual at present, by structure is limited, inevitably shows deflection deformation on roll in the operation of rolling, directly affect the quality of rolled parts, thus make the workpiece surface precision of rolling, mainly sheet metal thickness precision, do not reach requirement.

The first embodiment for the roll deflection bi-dimensionally controlled high-precision rolling mill that Fig. 4-7 display present invention is provided, as seen from Figure 4, two dimension support system includes frame 10, roller base 4,5 and intermediate strutting device therebetween.The content of frame 10 can be made into overall shape equipped with the main parts size such as upper and lower roll system, upper and lower roller base 4,5, frame 10, also can or other connection method welded by several parts be spliced to form.Upper and lower roll system is made up of working roll 1, intermediate calender rolls 2 and support roller 3 respectively, and they are collectively forming tower rollers system.Rolled parts label 12 is represented.The outermost support roller 3 of roller system in the form of multistage beam to be supported on upper and lower roller base 4 and 5, more than generally two sections beams (see Fig. 5).In intermediate strutting device, screwdown gear 6 is equiped between topping roll seat 4 and the interior upper wall of frame 10, it is located on roller base, the near middle of working roll body of roll axis, is normally within working roll barrel length.The upper and lower action of screwdown gear 6, makes topping roll seat 4 to be moved up and down in integral-rack 10, to adjust the seam between roll Gap.Screwdown gear is also equipped with thickness of slab automatic controls（Not shown in figure）, so as to detect the size of draught pressure and roll gap exactly, to be automatically controlled, therefore the production automation can be also realized while rolling high precision product.

Horizontal cushion block 7 (Fig. 4) is provided between lower roller base 5 and the lower inner wall of frame 10, it is located at the near middle of roller base bottom working roll body of roll axis, is usually located within working roll barrel length.Blunt obvious, lower roller base 5 is supported by horizontal cushion block 7.The horizontal cushion block 7 can form series using different dimensions, i.e. its thickness.The adjustment of roll line is realized by the horizontal cushion block 7 of different size thickness, equally also can be using hydraulic means or screw device come instead of cushion block 7.

Reference picture 4,6 and 7, it will become apparent from from Fig. 4, topping roll seat 4 except in vertical direction by addition to screwdown gear 6 is supported, supported in the horizontal direction by two pairs of upper vertical cushion block groups 8,8, upper vertical cushion block group 8,8 is arranged between the madial wall of frame 10 and topping roll seat 4, be respectively placed in the arranged on left and right sides of topping roll seat 4, and positioned at the near middle of working roll body of roll axis, within barrel length scope.The wedge (see Fig. 6) that is engaged of the composition of upper vertical cushion block group 8 by two incline directions conversely is constituted.Equally, lower roller base 5 is not only supported in vertical direction by horizontal cushion block 7, in the horizontal direction also by lower vertical cushion block group 9,9 supports, vertical cushion block group 9,9 is distributed between the madial wall of frame 10 and lower roller base 5 down, they are respectively provided at the arranged on left and right sides of lower roller base 5, and positioned at the near middle of working roll body of roll axis, within barrel length scope.Vertical cushion block group 9 is also to be matched to form (see Fig. 7) by wedge down.Above-mentioned lower roller base 5 is supported in frame 10 together with horizontal cushion block 7 and lower vertical cushion block group 9.Above-mentioned topping roll seat 4 is supported in frame 10 together with upper vertical cushion block group 8 and screwdown gear 6.

Due to the construction of the invention described above milling train, it is substantially reduced the deflection degree of roll, because the milling train of the present invention, intermediate strutting device between its frame, roller base, frame and roller base has collectively constituted two dimension support system, vertically and horizontally it is supported simultaneously on two directions, specifically, the upper and lower roller base or even support roller, intermediate calender rolls and working roll of gift machine are all support in the horizontal and vertical directions.The roll-force that working roll is born, support roller is delivered to through working roll, intermediate calender rolls, support roller by mandrel several back lining bearings constitute (referring to Fig. 5), therefore, roll-force is delivered to outer race, and now outer shroud is delivered to topping roll seat by bearing again in rotation, vertical stress component finally reaches inwall in frame through screwdown gear, and horizontal component reaches frame side wall through vertical cushion block group.Similarly, the roll-force that bottom working roll is born is delivered to lower roller base through intermediate calender rolls, support roller, and vertical stress component is delivered to inwall under frame through horizontal cushion block 7, and horizontal component reaches frame side wall through vertical cushion block group 9.Screwdown gear in power bang path, horizontal cushion block, vertical cushion block group are respectively positioned on the near middle of working roll body of roll axis, within barrel length scope.

So, Rolling machines of the invention are not only on the vertical plane, and ensure that working roll in the horizontal plane The linearity of the correct shape, i.e. bus of bus, hence in so that the deflection deformation of working roll will not substantially change with the change of roll-force, thus greatly reduces its deflection deformation, final effect is to make the thickness Wu Cha Minus of rolled parts Strip small.

The adjustment of roll gap is the action by screwdown gear 6, is realized by making topping roll seat 4 be moved up and down in the window of frame 10.

Milling train can also be to be fully inverted by the present embodiment, i.e., screwdown gear is changed into dozing device, at this moment with same effect.

The holding-down device of hydraulic of the present embodiment can also be replaced by Luo Chu mechanisms etc..

Fig. 8-9 shows the second embodiment of the present invention, also includes in the milling train by frame, the two dimension support system that roller base and intermediate strutting device therebetween are constituted.Specific part organic frame 10, topping roll seat 24, lower roller base 25, cushion block 21 and roller system, roller system include working roll 1, intermediate calender rolls 2, roller system in support roller 3, the roller system and first embodiment is identical, constitutes tower rollers system, its outer layer support roller 3 is also that the difference of second embodiment and first embodiment is to be respectively supported in the form of multistage beam on roller base 24 and 25：Intermediate strutting device is provided with screwdown gear 26,27, to replace screwdown gear 6 and upper vertical cushion block group 8 in first embodiment, there is provided lower bolster 21 replaces horizontal cushion block 7 and lower vertical cushion block group 9.It will be described in detail below.

Reference picture 8, find out in figure, lower roller base 25 is supported in frame 10 by two backing plates 21, two backing plates 21 are arranged between frame 10 and lower roller base 25 tiltingly, each lateral wall of upper and lower roller base forms an intilted inclined-plane respectively, and connects with respective top surface.On roll rod seat and 24 be supported on by screwdown gear 26,27 in frame 10, the screwdown gear 26,27 in figure is substantially made up of screw rod 27 and cushion block 26, and they, which are hooked, is arranged on roller base 24 (see Fig. 9).The latter has an inclined-plane on front view, and it is engaged with the inclined-plane of topping roll seat 24.Spiral shell Pattern on a pair of screw rods 27 is to be used for levelling effect, it is seen that it can move up and down topping roll seat 24, so as to drive roller system to move up and down, reaches the purpose of levelling roll gap.When on the rolling force action including horizontal and vertical component to topping roll seat 24, this makes a concerted effort to be transferred to screw rod cushion block group 26,27, finally reaches frame 10;The shape of frame 10 should adapt to be engaged with the shape of roller base 25,24.Because topping roll seat 24 and lower roller base 25 are inclined-planes, so frame 10 can bear power both horizontally and vertically, screwdown gear 26,27 and backing plate 21 in the bang path of power are respectively positioned on the near middle of working roll body of roll axis, within the scope of working roll barrel length, the thus deflection deformation in two directions that frame is produced, roller base is convertible into up to the quasi- rigid displacement of working roll, therefore the two dimension support system reduces the deflection deformation of working roll.Fig. 9 shows the cut-away view along D-D lines in Fig. 8.The just shape of the blunt structure and each part that embodiment 2 is can be seen that according to Fig. 8 and Fig. 9.In addition, the quantity of screwdown gear may be configured as more than two.

Milling train can be to be fully inverted by the present embodiment, it may have effect same. The screw mechanism of the present embodiment can be replaced by hydraulic cylinder etc..

Figure 10 and 11 is the schematic diagram of 3rd embodiment, is found out in figure, and lower roller base 35 and lower bolster 31 are identical with second embodiment structure.Except that the arrangement arrangement of screwdown gear 36,37 is different, they arrange in the upper face of frame 10 and the axis of frame 10 into squint direction, and are oppositely arranged in oblique, so make whole milling train configuration more reasonable.

Transmission on suffered roll-force in 3rd embodiment milling train, and the vertically and horizontally bearing piece of component, identical with second embodiment, its two dimension support system formed is to reducing the principle of working roll deflection deformation and acting on also essentially identical, just not repeated description herein.

The present invention milling train compared with prior art, with advantages below：

The integral-rack corresponding to roller base shape is carried due to the milling train of invention, and the rigidity of frame is very big, the position of cushion block or roll-separating mechanism between roller base and frame, positioned at the near middle of working roll body of roll axis, within working roll barrel length scope, and composition two dimension support system, so that not only on the vertical plane, and the shape of working roll bus is ensure that in the horizontal plane, so that the flexural deformation of working roll does not change substantially with the fluctuation of roll-force, so that the thickness error of Strip is greatly reduced.

The milling train of the present invention can make the control of roll shape in the design and rolling of original roller type greatly simplified.The milling train of invention is due to the flexural deformation on the horizontal and vertical face of working roll, do not change with the fluctuation of roll-force substantially, factors in original roller type design, flexural deformation, flattening deformation, thermal expansion and the abrasion of such as roll, this most important factor of flexural deformation can not be considered, and thermal expansion and abrasion are to change the slow factors of Slow, thus the control of roll shape in the design and rolling of original roller type can be made greatly simplified.In addition, by avoiding " pass " that two working roller bendings of prior art milling train are formed, so being conducive to the lateral flow of metal so that be conducive to using wedge-shaped blank rolling high precision plate Tapes materials, and " edge is thinned " phenomenon of Strip is greatly improved.

In embodiment of the present invention, the roller number of roller system is 12 rollers, but equally applicable for the roller system of other roller numbers.The configuration in addition, roll holder assembly different in the present invention can intersect, roll holder assembly or roller system cross-over configuration that can also be with milling train in the prior art.

The present invention is not limited solely to apply in cold-rolling mill, moreover it is possible to suitable for the production gift machine of hot gift Strip.Although described above is presently preferred embodiments of the present invention, it will be apparent to one skilled in the art that, under without departing from appended claims ambit of the present invention, various changes made for the present invention are included within the scope of the present invention.

Claims (14)

1. Claim

   1. a kind of milling train of strips or plates, mainly by frame (10), upper roller system and lower roll system, and topping roll seat and lower roller base composition, the upper and lower roll system is positioned to pyramidal structure, it is characterized in that, intermediate strutting device between frame, roller base, frame and the roller base of the milling train collectively constitutes two dimension support system, intermediate strutting device is arranged at least one in upper and lower roller base, and it is arranged in working roll body of roll axis near middle, the length of its of length no more than working roll body of roll.

   2. according to the milling train described in claim 1, it is characterized in that, the intermediate strutting device includes screwdown gear (6) and horizontal cushion block (7), they are separately mounted to the inner roof wall and roller base (4 of frame (10), 5) between top surface, the intermediate strutting device also includes vertical cushion block group (8,9), they are vertically installed in the madial wall and roller base (4 of frame (10) respectively, 5) between two side, and formation is brought into close contact, so that frame (10) opposite rolls seat constitutes two dimension support.

   3. according to the milling train described in claim 1, it is characterised in that the frame (10) is integral casting frame, or pieces together integral-rack by connection methods such as welding, and its outer wall is provided with window.

   4. according to the milling train described in claim 1, it is characterised in that roller system outermost layer is support roller

   (3), its mode for being arranged to multistage beam, generally more than two sections.

   5. according to the milling train described in claim 2, it is characterised in that the screwdown gear (6) can drive the upper and lower vertical movement in axis of the roller base along frame (10), to align roll gap.

   6. according to the milling train described in claim 2, it is characterised in that the vertical cushion block group (8,9) is made up of two pairs of wedges, the mating surface relative close laminating of each pair of wedge.

   7. according to the milling train described in claim 1, it is characterized in that, the intermediate strutting device includes screwdown gear (26,27,36,37) with backing plate (21,31), they are separately positioned on the inwall and roller base (24,25 of frame (10), 34,35) between.

   8. according to the milling train described in claim 1, it is characterised in that two lateral walls of each roller base of the roller base (24,25,34,35) form inclined inclined-plane inwards respectively, and connect with respective top surface.

   9. according to the milling train described in claim 7, it is characterised in that the screwdown gear (26,27,36,37) is screw rod cushion block group, and it includes screw rod (27,37) and cushion block (26,36).

   10. according to the milling train described in claim 9, it is characterised in that the cushion block (26,36) has inclined-plane, and the inclined-plane is engaged with the inclined-plane inclined inwards of roller base.

   11. according to the milling train described in claim 7, it is characterised in that the backing plate (21,31) and frame (10) bottom outer inclined-plane and the inclined-plane of roller base is fitted close.

   12. according to the milling train described in claim 9, it is characterised in that (37) 26,27,36 can arrange multiple, their axis parallel arrangements with frame (10), and be evenly distributed on axis both sides for the screw rod cushion block group.

   13. according to the milling train described in claim 9, it is characterised in that (26,27,36 37) can be with the axis of frame (10) into obliquely asymmetrical arrangement for the screw rod cushion block group.

   14. according to the Rolling machines described in claim 2 and claim 7, it is characterised in that the screwdown gear (6) and screw rod (27,37) can be replaced by hydraulic cylinder.