Reel for thin strips with roller for measuring planeness

FIELD: measurement of planeness of strip in reel shaft of hot strip rolling mill.

SUBSTANCE: proposed method includes measurement of planeness in reel shaft of hot rolling mill; reel shaft is provided with movable and immovable strips between pulling device and reel; hot strip is fed to reel through its shaft by means of roller table and pulling roller of pulling device; reel is provided with drum, hold-down rollers and end guides; roller for measurement of planeness is closed in reel shaft turned inside guide strip. Moving roller used for measurement of planeness has working position at which hot strip passes around roller used for measurement of planeness retaining approximately constant wrapping angle α and lowered position; reel shaft is provided with swivel guide strip closing the roller used for measurement of planeness.

EFFECT: enhanced economical efficiency; enhanced protection of roller in lowered position.

15 cl, 9 dwg

 

The invention relates to method of measurement, and the impact on the flatness of the strip in the mine winder installation for hot rolling strip, and mine winders contains between the pulling device and the winder is movable and fixed guide strip, and moving the roller for measuring flatness, having a working position, in which the hot strip passes around the roller for measuring flatness with maintaining approximately constant angle α girth, and a lowered position, and a hot streak served by the conveyor and the drive rollers of the pulling device through the mine winder the winder, containing the drum, pinch rollers and end rails. The invention relates also to a device for implementing the method.

Known use in cold rolling mills for measuring flatness of rollers for receiving the rolled strip without voltage affect the installation or configuration of the stands, causing, for example, uneven efforts of the rolling stands of the mill and/or corrective action using existing Executive systems (e.g., bend, change efforts hydraulic systems, cooling rolls, and so on).

When modern methods of hot-rolled rolled strips a minimum thickness <1,0 mm Flatness band plays upon receipt the thin hot-rolled strips a major role and has for equipment installation hot rolling high requirements. Installed after rolling mill device, such as a refrigerator for the band, robust cooled rollers and pulling device before winder, also affect the flatness of the strip.

Measuring flatness using a roller for measuring flatness is used when the thickness of the finished strip is about 3 mm or less, as used hitherto, optical measuring instruments with decreasing thickness of the finished strip, thereby increasing output speeds approached the limit of its possible application.

The disadvantage when measuring the flatness of a strip roller is that the roller for measuring the flatness of the strip is part of the conveyor, therefore, the factors affecting the flatness of the strip after it are ignored.

From DE 19704447 A1 is known a device for measuring the flatness of rolled strip in line for hot rolling with roughing and finishing groups of several mill stands, and winder, and, for example, between the pulling device and the winder is one or more of the measuring rollers. There are one or more measuring rollers in the mine winders, and negative properties of the strip are controlled mainly at the beginning and end of the runway.

According to WO 00/41832 known roller for measuring flatness in the mine Mota is key, made with the capability of raising and lowering replaced when failure of the rollers of the roller conveyor. Protection roller for measuring flatness from pollution and heat when it is not provided. Because of the complex of the rollers of the roller conveyor device expensive.

In WO 01/51227 revealed similar roller for measuring flatness, not located, however, in the mine winder. This video is for measuring flatness contains in addition to the rollers of the roller conveyor additional shielding plate, which further increases the cost of the device.

The basis of the present invention lies in the task of improving this node type roller for measuring flatness so that it can be manufactured very economically and in addition, to ensure effective protection of the roller for measuring flatness in a lowered position.

This problem is solved in the method of applying the device of the type indicated above by means of the characteristics of claim 1 and 2 claims, in which, respectively, the described method and apparatus. Preferred embodiments of the invention, as well as various forms of execution of the device disclosed in the dependent clauses.

The essence of the invention is to provide a method and device for measuring and influencing the flatness of the strip, and moving the roller for measuring flatness has a working Polo is a group of in which the hot strip passes around the roller for measuring flatness with maintaining approximately constant angle α girth, and a lowered position, and the roller for measuring flatness in the mine winder turn closes the inside of the guide strip. Using this measure roller for measuring flatness, mostly at the beginning and at the end of the strip may be moved to the closed position. In the mine winder is closing the roller for measuring the flatness of a pivotable guide strip, resulting in the steady movement of the strip, in particular the end and the beginning of the band.

Other details and advantages of the invention are given in the following description, which are explained in more detail examples of the invention shown in the drawings, which represent:

figure 1 - location of the roller for measuring flatness between the pulling device and the winder with the passage beginning of the band;

figure 2 - roller for measuring flatness in the measuring position shortly after the start of the winding process;

figure 3 - roller for measuring flatness in the measuring position when the winding roll;

figure 4 - roller for measuring flatness in the measuring position shortly before the end of the winding process;

figure 5 - roller measured for the I flatness, omitted at the entrance of the strip;

figure 6 is another arrangement of the roller for measuring flatness and guide roller between the pulling device and the winder with the passage beginning of the band;

7 - roller for measuring flatness at 6 in the measuring position with the lowered guide roller shortly after the start of the winding process;

on Fig - roller for measuring flatness at 6 in the measuring position with the lowered guide roller shortly before completion of the winding process;

figure 9 is lowered the roller for measuring flatness on 6 and raised guide roller during the passage of the end of the strip.

Hot rolled strip 1 is served on the roller table 2 and through the pinch rolls 3, 4 of the pulling device to the winder drum 5, the clamping rollers 6 and end rails 7. Between the pulling device and the winder are guides 8-12 strip and the roller 13 for measuring flatness, as well as turning the closing device 14. Guide 8 strip is part of the distributor 15 bands for selective switching of the beginning of the winding of the strip when using multiple winders.

Guide 9 band represents, for example, actuated by a cylinder cover 16 9 mine, which is directly after the entrance band up around a common center 17 of the rotational distribution is El 15 strips the cover 9 of the mine and the distribution roller 18.

Guide 10 of the strip is stationary guide, a customized only for regulation of the gap relative to the drive roller 3.

Guide 11 is fixed, and the guide 12 of the strip is connected with the end of the guide 7.3 and after entering the strip is folded together with the end of the guide 7.3 and the pressure roller 6.3.

The roller 13 for measuring flatness is installed in the rotary frame 19, which rotates around a stationary center 20 of rotation and can be rotated, for example, adjustable position by a hydraulic cylinder 21.

The actual sensor location values, which is installed in the hydraulic cylinder 21 or at the center 20 of rotation, which provides recording the actual position of the swing frame 19 or roller 13 for measuring flatness.

Rotary closing device 14 mounted to rotate about a fixed center 22 of rotation, for example by means of cylinder 23. This closing device 14 serves as a guide strips at the entrance band, and as a closing device for a roller 13 for measuring flatness in a lowered position.

The roller 13 for measuring flatness is equipped with a rotation drive (not shown) with the speed control and torque, so that upon contact with Olocau there is no velocity difference between strip 1 and the surface of the roller and there was no grinding risks or layers of material, so directly after contact with the strip, you can start measuring flatness.

After beginning the process of winding roller 13 for measuring flatness turn to its original position measurement (figure 2), and from this position in accordance with the increasing diameter of the bobbin is moved from the regulation position while maintaining a constant angle α girth.

Shortly before the end of the process of the winding roller 13 for measuring flatness and lower guide strip 14, which is also protection for the roller 13 for measuring flatness, turn inward.

Simultaneously with the lowering of the roller 13 for measuring flatness to the reel down pinch rollers 6 in order to avoid the beating of external coils.

After removing the reel pinch rollers 6 with integral guides 7 again turn into the winding of figure 1 and the cover 9 mine lowered. You can then wrap the next stripe.

Another variant of the device is shown in Fig.6-9 and is described as follows. Hot strip 1 is served on the roller table 2 and through the pinch rolls 3, 4 of the pulling device to the winder drum 5, the clamping rollers 6 and end rails 7.

Between the pulling device and the winder are the guides 8, 9.1, 9.2, 10, 11, 12 strips, a roller 13 for measuring flatness and rotary guide 14 p the band, and the guide roller 24.

Guide 8 strip is part of the distributor 15 bands for selective switching of the beginning of the winding of the strip when using multiple winders.

Guide 9.1, 9.2 strip is a driven, for example, two adjustable position by hydraulic cylinders 16, 25 cover 9.1, 9.2 mine, which is installed with the possibility of rotation in the General center 17 of rotation of the distributor 15 bands, the distribution roller 18 and the cover 9.1, 9.2 mine.

The guide roller 24 is mounted for rotation on the rotatable around the center 17 of rotation of the lid 9.1 mine, and after entering the beginning of the band and the subsequent start of the winding process move it around with the regulation of the position in the lower end position to the stationary stops. During this lowering movement, the guide roller 24 at the same time turn up separately rotatable part 9.2 cover mine with cylinder 25 around the center 26 of the guide roller 24 in order to create the necessary free space for the wound roll.

Directly in the process of winding roller 13 for measuring flatness installed in the rotary frame 19, rotates around the rotation center 20 using, for example, controlled by the position of the hydraulic cylinder 21 to the two stationary stops in the measuring position.

In E. the second measuring position during the entire winding process results in a continuous geometry of movement of the strip between the pulling roller 3, roller 13 for measuring flatness with a constant angle α girth and the guide roller 24.

Guide strip 14 secured to the rotary frame 19 of the roller 13 for measuring flatness and automatically rotates together with it in the process of lowering the roller 13 for measuring flatness.

Shortly before the entrance end of strip cover 9.1 shaft guide roller 24 rotates in the upper end position while lowering the lid 9.2, while the roller 13 for measuring flatness move in the lowered closed position.

After removing the reel pinch rollers 6 with integral guides 7 again turn into the winding at 6 and the cover 9.1, 9.2 mine with the guide roller 24 is lowered into position winding on 6, then wrap the next stripe.

The roller 13 for measuring the flatness and the guide roller 24 is equipped with a rotational drive (not shown) with the speed control and torque, so that there was no difference in the velocities between the strip and the surface of the roller and there was no grinding risks or layers of material, so that directly after contact with the strip, you can start measuring flatness.

1. The method of measurement and impact on the flatness of the strip in the mine winder installation for hot procedurality, and mine winders contains between the pulling device and the winder is movable and fixed guide strip, and a movable roller for measuring flatness, having a working position, in which the hot strip passes around a roller (13) for measuring flatness with maintaining approximately constant angle α girth, and a lowered position, in which the hot strip served by the conveyor and the drive rollers of the pulling device through the mine to the winder, containing the drum, pinch rollers and end rails, characterized in that the roller (13) for measuring flatness close turn inward and placed in the mine winder the guide (14) hot rolled strip.

2. The device of the mine winder installation for hot rolling strip, including between the pulling device and the winder is movable and fixed guide strip, and a movable roller for measuring flatness, having a working position, in which the hot rolled strip passes around a roller (13) for measuring flatness with maintaining approximately constant angle α girth, and a lowered position, in which the hot strip served by the conveyor and the drive rollers of the pulling device through the mine to the winder, containing the drum, pinch rollers and end rails, distinguish what Eesa fact, what in the mine winder is provided for closing the roller (13) for measuring flatness, turn inside rail (14) hot rolled strip.

3. The device according to claim 2, characterized in that the roller (13) for measuring flatness is mounted for movement into position after creating tensile stresses in the band.

4. Device according to any one of claim 2 or 3, characterized in that the roller (13) for measuring flatness mounted on the rotating frame (19)mounted for rotation relative to the center (20) of rotation.

5. The device according to claim 4, characterized in that the roller (13) for measuring flatness is mounted for movement in a working position relative to the center of rotation (20) by means of a hydraulic cylinder (21).

6. The device according to claim 2, characterized in that the roller (13) for measuring flatness is mounted for rotation by the drive.

7. The device according to claim 6, characterized in that the actuator is made with the possibility of smooth adjustment of speed and/or torque of the roller (13).

8. The device according to claim 2, characterized in that the roller (13) for measuring flatness and rail (14) of the strip is installed with the possibility of separate rotation around different centers of rotation (20, 22).

9. The device according to claim 5, characterized in that the roller (13) for measuring plaskonos and installed with smooth movement and adapting to the changing height of the bobbin to maintain approximately constant angle α the circumference of the cylinder (21).

10. The device according to claim 8, characterized in that the guide (14) bands with hydraulic cylinder (23) mounted for movement around a center of rotation (22).

11. The device according to claim 2, characterized in that the roller (13) for measuring flatness and rail (14) strip mounted for movement around a common center of rotation (20).

12. The device according to claim 11, characterized in that the roller (13) for measuring flatness and rail (14) of the strip and made with the possibility of mounting on the bearing frame (19).

13. Device according to any one of 11 and 12, characterized in that the roller (13) for measuring flatness is installed to rotate in a stationary working position.

14. Device according to any one of claim 11 or 12, characterized in that to maintain approximately constant angle α circumference of the roller (13) for measuring flatness on the movement path of the hot-rolled strip (1) place adjustable by the position of the guide roller (24).

15. The device according to 14, characterized in that the guide roller (24) is rotatably driven with the smooth control of speed and/or torque.



 

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