CN201223876Y - Six-roller cold rolling mill - Google Patents

Abstract

The utility model belongs to the technical field of forming, relates to a cold-rolling mechanical equipment, in particular to a six-roller cold-rolling mill. The axial locking device of the utility model is connected with the support roller and installed on the operation side of the upper and lower parts of the archway; the support roller balance device is connected with the upper support roller; Drop on the top of the fine-tuning device on the hydraulic pressure; the axial movement device is installed outside the transmission side of the archway and connected with the middle roller through the axial movement device; the axial movement locking device is installed on the bending roller block on the transmission side, and the roller The system compensation device is installed on the upper part of the archway. The utility model improves the dimensional accuracy of cold-rolled strip steel products, improves the degree of automation in the production process; the equipment pressing mechanism is simple, the layout is compact, and the service life of the bearing is improved; the roll change is fast, flexible, stable and reliable, and the operation is convenient . It is suitable for rolling ordinary carbon steel, high-quality carbon steel, low alloy steel and stainless steel strip products.

Description

A six-high cold rolling mill

technical field

The utility model belongs to the technical field of forming, and relates to a cold-rolling mechanical equipment, in particular to a six-roller cold-rolling mill used for reversible cold-rolling steel rolling equipment, aluminum material rolling equipment or copper material rolling equipment.

Background technique

With the rapid development of modern industry, the vigorous development of industry, construction and household appliances, etc., higher and better requirements are put forward for the products of cold-rolled strip steel, especially for the dimensional accuracy and shape of cold-rolled strip steel. higher requirement. For example, the dimensional tolerance requirement of electro-galvanized aluminum for cold-rolled strip steel should not be greater than ±8μm. In the modern production field, compared with the four-roll or six-roll rolling mills with electric pressing, the rolling mills using electric pressing can basically not adjust the longitudinal tolerance of the strip on-line. The gap is no longer adjusted during the rolling process. Therefore, the online feedback compensation adjustment cannot be well realized for factors such as changes in raw material thickness, rolling speed and tension, and changes in roll shape during the rolling process. The thickness and dimension accuracy of the produced strip steel is low, and the plate shape is poor, which cannot meet the requirements of high-quality products. Although the current reversible four-high rolling mill has developed from a turbo-worm type electric pressing device to a hydraulic pressing device, its performance has been continuously improved, and its use is more common. Simultaneously, the current six-high rolling mill has developed into a rolling mill with joint control of intermediate roll bending and shifting. Such a rolling mill is known, such as Japanese Patent 66307/1981. Its work roll diameter is small, but the bending force of this type of rolling mill has a great influence on the eccentricity of the roll bearing when it moves, which is not conducive to rolling control. Roll back out, due to the limitation of local size, the depth of the upper roll falling on the lower roll pin is small and it is difficult to overcome the buffer force of the advance of the roll, which causes the roll to fall off and fall off when the roll is advancing, which affects the rhythm of roll change and is not conducive to production . With the rapid development of modern industry, the demand for high-quality cold-rolled products has increased, and the existing four-high and ordinary six-high rolling mills can no longer meet the requirements of shape control capabilities.

Contents of the invention

The purpose of the present invention is to provide a six-roller cold rolling mill, which can meet the requirements of shape control capability and can produce high-precision and high-quality cold-rolled products.

The utility model is realized in the following ways:

The axial locking device is connected with the supporting roller and installed on the upper and lower operating sides of the archway; the supporting roller balancing device is connected with the upper supporting roller; the hydraulic pressure upper fine-tuning device is installed at the bottom of the archway and the lower supporting roller is directly placed on the Hydraulic pressure on the top of the fine-tuning device; the axial movement device is installed outside the transmission side of the archway and connected with the middle roller through the axial movement device; the axial movement locking device is installed on the bending roller block on the transmission side, and the roller system compensation device Installed on the upper part of the archway.

The utility model improves the dimensional accuracy of cold-rolled strip steel products, and enhances the control ability of the plate shape; improves the degree of automation in the production process; the equipment pressing mechanism is simple, and the layout is compact; the rolling control of the bending roll is stable and the precision is high. , and improve the service life of the bearing; change the roll fast, flexible, stable and reliable, and easy to operate. The utility model is suitable for rolling ordinary carbon steel, high-quality carbon steel, low alloy steel and stainless steel strip products.

Description of drawings

Accompanying drawing 1 is the top view schematic diagram of the utility model.

Accompanying drawing 2 is A schematic diagram of the utility model.

Accompanying drawing 3 is the BB sectional schematic diagram of the present utility model.

In the figure, item 1 is the roller system compensation device, item 2 is the backup roll, item 3 is the axial locking device, item 4 is the backup roll balancing device, item 5 is the intermediate roll, item 6 is the working roll, and item 7 is the hydraulic Roll bending device, item 8 is the hydraulic pressure fine-tuning device, item 9 is the archway, item 10 is the roll changing hydraulic cylinder, item 11 is the axial movement device, item 12 is the cooling and lubricating device, and item 13 is the automatic clutch of the upper work roll Pin, part 14 is an axial movement locking device.

The roll system compensation device 1 is composed of mechanical ladder blocks, wedge blocks, crown control hydraulic cylinders and sensors; the backup roll balance device 4 is composed of backup roll balance blocks, hydraulic cylinders and control elements; the hydraulic roll bending device 7 is composed of bending Roller block, hydraulic cylinder and control components; the hydraulic pressure fine-tuning device 8 is composed of a pressure hydraulic cylinder and sensors; the axial movement device 11 is composed of a bracket, a mobile hydraulic cylinder and detection and control components; the cooling and lubricating device 12 is composed of Support, injection beam, cylinder etc.; Axial movement locking device 14 is made up of hydraulic cylinder, locking pin, bracket and sensor etc.

Detailed ways

The utility model is further described according to accompanying drawing 1-3:

The archway 9 constitutes a closed frame structure, and the roll system compensation device 1, backup roll 2, backup roll balance device 4, intermediate roll 5, work roll 6, hydraulic roll bending device 7, hydraulic pressure fine-tuning device 8 and roll changing hydraulic pressure The cylinder 10 etc. are installed in the archway 9; the roller system compensation device 1 is installed on the upper part of the archway 9; the axial locking device 3 is connected with the supporting roller 2 and installed on the operating side of the upper and lower parts of the archway 9; the supporting roller balancing device 4 is connected with the upper support roll 2 and installed in the middle of the archway 9; the middle roll 5 is respectively installed between the support roll 2 and the work roll 6; the hydraulic pressure fine-tuning device 8 is installed at the bottom of the archway 9 and the lower support roll Drop on the top of the fine-tuning device 8 on the hydraulic pressure; the hydraulic roll bending device 7 is connected with the intermediate roll 5 and the work roll 6 and installed in the middle of the archway 9; the roll changing hydraulic cylinder 10 is connected with the upper intermediate roll 5 and embedded in the hydraulic bending Inside the roller device 7; the axial movement device 11 is installed outside the transmission side of the archway 9 and connected with the intermediate roller 5 through the axial movement locking device 14; the axial movement locking device 14 is installed on the transmission side hydraulic bending device 7 Upper; the upper work roll change roll automatic clutch pin 13 is installed on the bearing seat of the lower work roll 6; the cooling and lubricating device 12 is installed between the two sides of the archway 9 and is close to the rolls (backup roll 2, intermediate roll 5, work roll 6 ).

The roll system consisting of rolls (backup roll 2, middle roll 5, and work roll 6) is installed in the vertical plane, and the back-up roll 2 supports the middle roll 5, and the middle roll 5 supports the work roll 6; at the same time, between the two middle rolls 5 There is a working roll 6 used to receive the drive, and the intermediate roll 5 can move along its axial direction.

The hydraulic roll bending device 7 is used for bending the work roll 6 and the intermediate roll 5; the backup roll balance device 4 is used for the balance of the upper backup roll 2; the axial movement device 11 is used for the axial movement of the intermediate roll 5; The device 14 is used for the axial locking of the axial moving device 11 and the intermediate roll 5; the upper and lower working rolls 6 are transmission rolls, which drive the rotation of the upper and lower intermediate rolls 5 and the backup roll 2 respectively.

The roll bending hydraulic cylinder installed in the hydraulic roll bending device 7 can realize the synchronous movement of the intermediate roll 5 when it works normally.

The hydraulic pressure fine-tuning device 8 is mainly used for on-line control of the longitudinal and transverse tolerances of the strip steel, and on-line control of the thickness change, tension change and rolling speed change of the raw material during the rolling process, so that the strip steel after rolling The longitudinal and transverse tolerances are within the target control range. The hydraulic roll bending device 7 is mainly used to control the shape and lateral tolerance of the strip, and adjust the convexity of the middle roll 5 by applying bending force at both ends of the middle roll 5 to improve the shape of the rolled strip. Backing roll balancing device 4 is mainly used for balancing the upper backing roll. The axial moving device 11 is mainly used to control the edge convexity of the strip caused by the width variation of the rolled strip. The roll gap compensation device 1 is composed of a mechanical step block, a wedge block, and a sensor. The roll gap compensation device 1 is mainly used for compensating the rolling height after the grinding of the rolls, so as to meet the normal benchmark range of the rolling mill. The hydraulic axial locking device 3 is mainly used for the axial positioning of the roll to keep the roll in a normal working state. The roll changing hydraulic cylinder 10 is mainly used to lift the intermediate roll 5, so that the roll changing trolley can replace the intermediate roll 5 in the frame. The roll change pin 13 of the upper work roll adopts automatic clutch, and is supported on the lower work roll, so as to meet the requirement of fast roll change of work rolls in pairs.

The utility model makes the rolling mill roll gap setting, online roll gap fine-tuning, roll bending and balance, roll grinding compensation and axial locking etc. all adopt hydraulic control, and at the same time, the force on the rolls is uniform, and it is not affected by the change of the position of the rolls. Change, so as to ensure the stability of the rolling mill performance. Therefore, the longitudinal and transverse dimensional accuracy of the rolled product and the stability of the plate shape are improved.

When the upper work roll change automatic clutch pin is working normally, the upper and lower work rolls are automatically separated, and when the roll is changed, they are automatically joined, and the upper work roll backs the lower work roll, effectively preventing the roll from falling and falling off.

When changing rolls, except for the upper work roll, which needs to be carried out by the lower work roll, the rest of the rolls can be replaced independently and quickly.

The utility model has the following advantages:

a Improve the dimensional accuracy of cold-rolled strip products, and enhance the ability to control the shape of the strip. Due to the hydraulic fine-tuning device, the longitudinal and transverse thickness tolerances of the strip are controlled within a high-precision range. At the same time, the axial moving device is adopted, so that the convexity of the strip steel caused by the width change can be better controlled. Furthermore, the shape control of the rolled strip steel can be within the range of high precision.

b Increased the degree of automation in the production process. Since the roll system compensation, backup roll balancing device, roll changing device and axial locking device are all hydraulically controlled, the fully automatic control mode is realized, the operation is stable and the control precision is high, thereby improving the control level.

c The pressing mechanism of the equipment is simple. Due to the hydraulic fast push-up system, it can be realized only by setting a large-stroke high-precision hydraulic cylinder, with compact layout and simple structure.

d The rolling control of the bending roll is stable and the precision is high. Since the roll bending hydraulic cylinder moves together with the roll, the roll bending force applied to the roll does not change due to the change of the position of the roll, so the action position of the roll bending control force on the roll bearing remains unchanged, so the roll bending force has no effect on the eccentricity of the roll. The impact is small, which improves the stability of the bending control and increases the service life of the bearings.

e Roll changing is fast, flexible, stable and reliable. Since the working rolls and intermediate rolls adopt independent roll changing tracks, and an independent fast track lifting hydraulic cylinder is set on the bending block of the upper intermediate roll, the working rolls and intermediate rolls can be replaced independently, thereby improving the roll changing process. flexibility and easy operation.

f The upper work roll is backed out from the lower work roll, and an automatic clutch pin is set on the lower work roll, and an anti-falling groove is set to prevent the roll from falling off and off.

The utility model improves the dimensional accuracy of cold-rolled strip steel products, and enhances the control ability of the plate shape; improves the degree of automation in the production process; the equipment pressing mechanism is simple, and the layout is compact; the rolling control of the bending roll is stable and the precision is high. , and improve the service life of the bearing; change the roll fast, flexible, stable and reliable, and easy to operate. The utility model is suitable for rolling ordinary carbon steel, high-quality carbon steel, low alloy steel and stainless steel strip products.

Claims (4)

1, a kind of six-roll cold mill, it comprises backing roll (2), intermediate calender rolls (5), working roll (6) and memorial archway (9), backing roll (2), intermediate calender rolls (5) and working roll (6) are installed in the memorial archway (9), intermediate calender rolls (5) is installed in respectively between backing roll (2) and the working roll (6), cooling and lubricating device (12) is installed between the inner both sides of memorial archway (9) and is close to backing roll (2), intermediate calender rolls (5) and working roll (6), and it is characterized in that: axial locking device (3) is connected with backing roll (2) and is installed on the fore side of memorial archway (9) upper and lower; Backing roll bascule (4) is connected with top backing up roll (2); Hydraulic pressure presses micromatic setting (8) and is installed in the bottom of memorial archway (9) and the lower support roller is directly fallen to being placed on the top that hydraulic pressure presses micromatic setting (8); The outer axial moving device (11) that also passes through of transmission side that axial moving device (11) is installed in memorial archway (9) is connected with intermediate calender rolls (5); Move axially on the roller bending block (7) that locking device (14) is installed in transmission side, roller is the top that compensation arrangement (1) is installed in memorial archway (9).

2, six-roll cold mill according to claim 1 is characterized in that top working roll roll change automatic clutch pin (13) is installed on bottom working roll (6) bearing block.

3, six-roll cold mill according to claim 1 is characterized in that hydraulic roller-bending device (7) and intermediate calender rolls (5) and working roll (6) are connected and are installed in the middle part of memorial archway (9); Roll change hydraulic cylinder (10) is connected with last intermediate calender rolls (5).

4, six-roll cold mill according to claim 1, it is characterized in that being in working roll vertical support roller, by the intermediate calender rolls (5) of supporting working roll (6) with forms, respectively be used to the working roll (6) accepting to drive between two intermediate calender rolls (5) by one by the backing roll (2) that intermediate calender rolls (5) is supporting.

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