CN1410178A

CN1410178A - Multipoint pressing and plate shape control device of rolling mill

Info

Publication number: CN1410178A
Application number: CN 02146758
Authority: CN
Inventors: 王宇; 钱文君
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-06
Filing date: 2002-11-06
Publication date: 2003-04-16
Anticipated expiration: 2022-11-06
Also published as: CN1206050C

Abstract

A multi-point pressing down and plate shape controller for rolling mill is composed of a pair of upper and lower working rollers, two pairs of the first upper and lower layers of supporting roller, three pairs of segmented backing bearing rollers, and a pair of upper and lower roller boxes. It features that the multi-point pressing-down and plate shape controller is arranged at least in one position between top of upper roller box or bottom of lower roller box and machine frame. Its advantages are effective and flexible regulation of rolling force and roll camber and high quality of product.

Description

The multiple spot that is used for milling train is depressed and plate shape control device

Technical field

The invention belongs to the plant equipment field, a kind of multiple spot that is used for milling train that specially refers in metallic plate and alloy sheets thereof, band production is depressed and plate shape control device.

Background technology

In prior art, the milling train that is generally used for plate, band production has 2 rollers, 4 rollers, HC, and (domestic general system refers to 6 roller machines, its original meaning is called for short the HC machine from " Hitachi high accuracy control milling train "), UC (referring to omnipotent convexity control milling train), PC (the paired cross rolling mill of roll), CVC (regulating the control milling train continuously) and various multi-roll mill, these milling trains all are that the mode that adopts two-point to depress is operated, and screwdown gear all is positioned at the roll neck place of roll, with reference to Fig. 1, represent that a kind of 2-4 roller mill two point form of prior art is depressed schematic diagram.

Multi-roll mill has obtained using widely in the whole world since nineteen thirty comes out.Especially majority adopts multi-roll mills in the production of stainless steel and difficult deformable metal band.Its characteristics are that the minor diameter working roll can reduce roll-force, cut down the consumption of energy, and can rolling thinner band.Have the backing cloth bearing roller and the tower rollers system of segmented multi-point support, make the roller cording that higher rigidity be arranged.Multi-roll mill can be divided into Sendzimir milling train and the four vertical Rohn type milling trains and the Frohling milling train of memorial archway formula of unit frame, Demag20 roller mill.

The Sendzimir milling train has adopted the integral cast steel frame, and housing rigidity is big.It is depressed to baroque off-centre and depresses, and adjustment amount is little, and the milling train opening degree is little, operation inconvenience.Fig. 2 is the eccentric screw-down schematic diagram of Sendzimir milling train.

Four column Rohn type milling trains.Adopted the top and the bottom open frame.Its housing rigidity is not as the Sendzimir milling train.But it is big that its four column is depressed the mode opening degree, operates also more convenient.Fig. 3 is the schematic diagram of four column Rohn type milling trains (Sundwig).

Frohling, Demag, CR milling train have adopted common 2 rollers, the 4 roll-types frame of remaining silent.The roller case of up-down rollers system is housed, is installed in the framework window.Depress mode and common 2 rollers, the same two-point of 4 roller mills.It is depressed cylinder and is positioned at top roll upper box part or lower roll lower box part.

Fig. 4 is a Frohling20 roller mill schematic diagram, and its two depress oil cylinders are positioned at the top of top roll case.

Their common disadvantage of above-described known technology, be to make roll produce bigger flexural deformation, control this distortion in order to take measures, reduce its influence to strip thickness, especially the influence of lateral thickness difference, China and foreign countries had made various research and repetition test with the provisional capital, as far back as 1989, it number is 89202658.8 to have reported their improved work that Chinese patent application is just arranged, the Position Design of screwdown gear and cushion block is being positioned near the working roll axis middle part, the progressive that this patent possesses skills has reduced the lateral thickness difference during the strip material is produced.Though screwdown gear no longer is positioned at the roll neck place of roll, but concentrate to the middle part, it also belongs to two-point eventually and depresses mode.Continuous progress along with the level of production, precision prescribed to plate, strip product improves day by day, needs from industry technical development, wish to seek a kind of control mode of depressing and adjusting working roll of adjusting more effectively, neatly, thereby obtain thick difference is as far as possible little, plate shape is good high-quality plate, strip product, for this reason, we develop and test, develop the new device that plate shape control function was depressed and had to a kind of multipoint mode with great concentration.Rolling by putting into practice, make the production product obtain well-content result, make respectively being significantly improved of plate, strip-rolling product to index.

Summary of the invention

The technical issues that need to address of the present invention are to depress at existing milling train two-point, and roll produces flexural deformation, and strip thickness is had many defectives such as inhomogeneous influence, depresses and plate shape control device and redesign a kind of multiple spot.The objective of the invention is to adopt following technical proposals to realize, a kind of multiple spot that is used for milling train is depressed and plate shape control device, comprise with the workpiece being a pair of upper working rolls and lower working rolls of the plane of symmetry, ground floor backing roll about in the of two pairs, the three pairs of segmented backing cloth bearing rollers, a pair of up-down rollers case, and device is characterized in that in frame, at top roll upper box part or lower roll lower box part, at least one place is provided with multiple spot and depresses and plate shape control device.This device can adopt that motor machine is depressed mode, hydraulic pressure depresses mode and armstrong's patent is depressed mode, described multiple spot is depressed, its position be located at traditional 2 depress between, it is depressed and counts and can be adjusted to 11 point ranges in 3 o'clock by every row, its columns and pressure point number are selected along with plate, strip product width and precision prescribed, and this device can be established 1 row to 2 row.

The invention has the beneficial effects as follows that depressing of this multipoint mode can be adjusted roll-force more effective, neatly and adjust working roller, makes in its strip material production and obtains the quality product that thick difference is littler, plate shape is smooth.

Further specify embodiment below in conjunction with accompanying drawing

Description of drawings

Fig. 1 depresses schematic diagram for 2-4 roller mill two point form in the prior art

Fig. 2 is the eccentric screw-down schematic diagram of known Sendzimir milling train

Fig. 3 is the schematic diagram of four column Rohn type milling trains

Fig. 4 is a Frohling20 roller mill schematic diagram

Fig. 5 will depress to the close device schematic diagram in center in the prior art

Fig. 6 depresses and plate shape control device structural representation for multipoint mode of the present invention.

The specific embodiment

With reference to Fig. 1-Fig. 5, milling train in the expression prior art all belongs to the device that two-point is depressed, and wherein is that the plane of symmetry is provided with a pair of upper working rolls and lower working rolls 1 with the workpiece, a pair of backing roll 2 up and down, a pair of metal (upper roller (or seat) 3.With reference to Fig. 6, designed segmented backing cloth bearing roller 3 among the present invention, it is by 4 bracketings of pair of rolls case up and down, and place the inside of frame 5, on the top of top roll case and the bottom of lower roll case be provided with 3 points (multiple spot) and depress, they also can be selected in the scope that 3-11 orders, in the present embodiment 3 depress be equipped with three plate shapes control hydraulic cylinders 6,6 ' and 6 "; this hydraulic cylinder can be adjusted flexibly and depress and control panel shape shape, and quilt is rolled among the figure plate, band are 7.

Claims

1, a kind of multiple spot that is used for milling train is depressed and plate shape control device, comprise with the workpiece being that the plane of symmetry is provided with a pair of upper working rolls and lower working rolls, ground floor backing roll about in the of two pairs, the three pairs of segmented backing cloth bearing rollers, a pair of up-down rollers case, and device is in frame, it is characterized in that between top roll upper box part or lower roll lower box part and frame, at least one place is provided with multiple spot and depresses and plate shape control device.

2, the multiple spot that is used for milling train according to claim 1 is depressed and plate shape control device, it is characterized in that, described multiple spot is depressed, its position be located at former 2 depress between, its pressure point number can be provided with at 3 o'clock by every row and select to adjust according to product width to 11 point ranges, and this device can be established 1 row to 2 row.