JPH05192706A - Crown roll - Google Patents

Abstract

PURPOSE:To provide a crown roll with which proper control of meandering can be executed by stably keeping uniform adhesion of a strip to a roll. CONSTITUTION:Electromagnets 3a, 3b are arranged so as to enclose a roll shaft 2 in the roll barrel 1 and in both tapered parts on both end part sides in the axial direction and the adhesion of steel strip which is passed through there is secured by their magnetic forces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crown roll capable of appropriately correcting meandering of a strip in a steel strip continuous processing line.

[0002]

2. Description of the Related Art In a steel strip continuous processing line, a crown roll is used as a conveying roll as a method for correcting the meandering of the steel strip.

Even when this crown roll is used, there is a problem that if the contact between the crown roll and the steel strip becomes uneven, proper meandering control cannot be performed. An example of this will be described with reference to FIG. 2 (a). Even if it is desired to correct the meandering of the strip 7 to the A side by using a crown roll, the B side end of the strip 7 is not in close contact with the roll body 1. Therefore, the strip 7 approaches the B side in the opposite direction to the correction direction, and the meandering may be promoted.

Therefore, conventionally, an auxiliary roll was installed in the vicinity of the crown roll, and by pressing the roll, the steel strip was pressed against the crown roll to ensure the adhesion thereof, thereby achieving a stable meandering correction.

[0005]

However, in the above-mentioned structure in which the auxiliary roll is provided, the following problems have become apparent.

In addition to the auxiliary roll, it is necessary to provide an additional member for controlling the pressing force of the roll, which makes the device configuration mechanical and complicates the mechanism. Since it is necessary to dispose an auxiliary roll for each of the transport rolls that are crown rolls, there is no choice but to expand the space accompanying the installation of the roll and the above-mentioned accessory members. Since it is a contact type to the steel strip, the strip is easily scratched.

The present invention was devised in view of the above problems, and it is an object of the present invention to provide a crown roll capable of performing proper meandering correction without using an auxiliary roll.

[0008]

Therefore, the crown roll according to the present invention uses a magnetic member for part or all of the roll body, and its magnetic force ensures uniform adhesion to the steel strip roll. It is characterized by.

Here, the roll body means all of the roll except the roll axis. Therefore, not only the structure in which the magnetic member is used on the surface of the body but also the structure in which it is arranged in a part of the body Are included in the present invention.

[0010]

The present invention will be used in a continuous processing line for magnetically attachable steel strips, when such steel strips pass through the crown roll according to the present invention,
Due to the magnetic force of the magnetic material of the roll body, it adheres to the surface of the roll body. Therefore, by disposing a magnetic material in the roll body portion where the adhesiveness of the strip is poor at the place where the roll is placed, uniform adhesiveness to the roll can be stably obtained when passing through the strip, and the crown roll The original function, meandering correction, will be performed stably.

[0011]

Embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following examples.

FIG. 1 is a sectional view showing an embodiment of the crown roll according to the present invention.

As shown, in this embodiment, the roll body 1
Electromagnets 3a and 3b are arranged so as to surround the roll shaft 2 at both of the tapered portions on the axial end side of the inside. A part of the shaft inside the roll shaft 2 is hollow, and a wiring cable 4 for power distribution is arranged therein. Also,
One of the rotary joints supporting the roll shaft 2 serves as a terminal, which is connected to a power supply cable 6. Further, in this embodiment, the electromagnets 3a and 3b on both sides inside the body 1 are
Are separately excited.

Next, the operation of this embodiment will be described.

As shown in FIG. 2 (a), when it is desired to correct the meandering of the steel strip 7 to the A side, B of the steel strip 7 is corrected.
If the adhesiveness on the side is poor, then as shown in FIG.
If only the side electromagnet 3b is excited, the B side of the steel strip 7 will come into close contact with the roll body 1 by the magnetic force.

Therefore, in this embodiment, the steel strip 7 can pass through the roll while maintaining the uniform adhesion, and the proper meandering correction can be achieved.

[0017]

As described above, according to the crown roll of the present invention, the uniform adherence of the strip to the roll can be stably maintained, and therefore the proper meandering control can be stably performed. Becomes

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a crown roll showing an embodiment of the present invention.

2A and 2B are explanatory views showing the operation of the present embodiment, where FIG. 2A is a strip state diagram when the electromagnet is not excited and FIG. 2B is a strip state diagram when the electromagnet is excited.

[Explanation of symbols]

 1 Roll body 2 Roll shafts 3a, 3b Electromagnet 4 Wiring cable 5 Rotating joint 6 Power supply cable 7 Steel strip

Claims (2)

[Claims] 1. A crown roll, wherein a magnetic member is used for a part or all of the roll body. 2. A crown roll, wherein electromagnets are arranged on both axial ends of the roll body.