JPH1099915A - Telescope correcting method of steel strip coil, and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively correct a telescope with simpler constitution free from any quality troubles by placing a wound coil on >=2 horizontal cradle rolls, and pressing the telescope part at the coil tail end in the width direction while the coil is turned in the winding direction. SOLUTION: When the telescope is generated in a wound coil C, the coil C is placed on two cradle rolls 2, 3 so that the side on which a tail end T is projected is the side of a correction roll 6. The correction roll 6 is pressed against the projected tail end T, and the tail end T is pressed in the width direction by a press cylinder 5 to apply the bending force and the shearing force. When the cradle roll 3 is driven and the coil C is turned in the winding direction in this condition, the force in the direction to return the coil to the normal position is constantly applied to the outermost circumference of the coil by a correction roll 6 to be brought into contact with the coil while the roll is turned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for correcting a telescope of a steel strip coil for correcting a telescope at a tail end of the coil when the steel strip is wound into a coil in a winding machine.

[0002]

2. Description of the Related Art On the exit side of a steel strip process line,
The steel strip is usually wound on a coil around a horizontal winding axis, i.e. in the down-end state. At that time, a telescope (tail end is shifted in the axial direction and protrudes from the coil edge) may be generated at the tail end of the coil. In order to correct this, generally, the coil after being wound is turned upside down by 90 degrees, and if necessary, a force is applied from above to push down the protruding coil edge.

However, this method has the following problems. 1) It requires a large-scale device called an up-end to make the coil up-end. 2) The edge of the coil is damaged when the coil is overturned or a force is applied to correct the telescope.

On the other hand, according to Japanese Patent Application Laid-Open No. 2-86533, there has been proposed a method and an apparatus for correcting a telescope of a coil in which a pressing plate is pushed from both sides toward a coil edge in opposition to a coil suspended by a coil lifter. I have. This will be described with reference to FIGS. FIG. 3 is a front view of this telescope correction device, FIG. 4 is a side view, 51 is a main body frame,
52 is a guide frame, 53 is a guide rod, 54 is a moving mechanism thereof, 55 is a moving piece, 56 is a holding plate, 57 is a holding cylinder, L is a coil lifter, and C is a coil.

In this telescopic correction device, a main body frame 51 is arranged on a pair of guide frames 52 arranged in the axial direction with respect to the coil so as to be able to move back and forth (approach / separate) with respect to the coil. A plurality of guide rods 53 extending radially in the radial direction of the coil C are provided on the main body frame 51.
A moving piece 55 that can be moved in the radial direction by a moving mechanism 54 composed of a motor, a screw, a nut and the like is mounted on each guide rod 53, and a pressing plate 56 is mounted on the moving piece 55 via a pressing cylinder 57. Have been.

Coil C supported by coil lifter L
Is suspended inside the pair of body frames 51, and the moving mechanism 54
After moving the moving piece 55 to a position corresponding to the outer diameter of the coil C, the main body frame 51 is made to approach both side surfaces of the coil C, and the pressing plate 56 is directed toward the outer diameter of the coil C by the pressing cylinder 57. It extrudes to correct the irregularities of the coil ends, that is, to correct the telescope.

[0007] This telescope correction device described in Japanese Patent Application Laid-Open No. 2-86533 is preferable in terms of quality in that the coil is less damaged than the above-described conventional correction method in which the coil is overturned. It is hard to say that it is much improved in that it requires a large-scale device.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for effectively correcting a telescope with a simpler structure without quality problems.

[0009]

SUMMARY OF THE INVENTION A method for correcting a telescope of a steel strip coil according to the present invention is a correction method for correcting a telescope at a tail end of a steel strip coil after winding. The telescope part at the tail end of the coil is pressed in the width direction while being placed on two or more cradle rolls and rotating in the winding direction.

The present invention also relates to a device for correcting a telescope for a steel strip coil, which corrects a telescope at a tail end of a coil of a steel strip coil, wherein two or more horizontal telescopes for mounting the coil are provided. A cradle roll, a driving device for driving at least one of the cradle rolls to rotate the coil in a winding direction, a pressing means for pressing a telescope portion at a tail end of the coil in a width direction, and a tip end thereof. A straightening means comprising a straightening roll is arranged on at least one side of the coil above the cradle roll.

[0011]

According to the present invention, the coil is rotated while pressing the telescope portion at the tail end of the coil in the coil width direction, so that the coil passes through a cradle roll supporting the coil. No need to be upend. In addition, since a force for pushing the telescope portion in the coil width direction is appropriately held and a rotatable correction roll is used, damage to the coil edge can be prevented.

The present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a situation in which correction is performed by the telescope correction device of the present invention, wherein 1 is a frame, 2 and 3 are cradle rolls supporting coils, 4 is a driving device of a cradle roll, and 5 is pressing means. , 6 is a straightening roll, C is a coil, and T is its tail end. The frame 1 has two horizontal cradle rolls 2 and 3 mounted in parallel. At least one of them, in this example, the cradle roll 3 is driven to rotate by the driving device 4 and is not driven to rotate. In this case, the cradle roll 2 rotates freely. A pressing cylinder 5 and a straightening roll 6 attached to the tip of the pressing cylinder 5 are arranged at positions on the side of the coil above the cradle rolls 2 and 3 of the frame 1.

If a telescope is generated in the coil C that has been wound, the coil C is placed on the two cradle rolls 2 and 3 so that the side where the tail end T protrudes is the side of the straightening roll 6. Place on top of. Then, the straightening roll 6 is pressed against the protruding tail end T, and the pressing cylinder 5 is pressed.
As a result, the tail end T is pressed in the width direction, that is, in the direction in which the telescope is corrected, and a bending force and a shearing force are applied.
In this state, when the cradle roll 3 is driven to rotate the coil C in the winding direction, the straightening roll 6 that contacts while rotating returns the coil to the normal position on the outermost periphery of the coil, that is, the protruding tail end T. Directional force acts,
As it passes through the cradle roll 2 or 3 in the corrected state, the telescope is gradually corrected as it rotates.

This process will be described with reference to FIG.
Is a state in which the coil C having a telescope at the tail end T is mounted on the cradle rolls 2 and 3. (B), while rotating the cradle roll 3 to rotate the coil C in the direction of arrow a, the correction scope 6 in FIG. 1 presses the telescope portion of the tail end T horizontally as shown by arrow b. Anyway, the telescope is corrected,
A phenomenon is seen in which the opposite end is lifted as shown by arrow c. Further, as shown in (c), when the rotation of the coil C is continued, the raised portion passes through the cradle roll and is pressed against the coil main body, and the lifting is eliminated, but the telescope is slightly restored. If this operation is continued, the telescope will gradually disappear. Here, the rotation direction of the coil C must always be the winding direction. If this is reversed, the wound steel strip will be unwound and the condition will be poor.

The pressing means is not limited to the cylinder, but may be any of a rack and a pinion mechanism.

[0016]

[Example] For a coil with a weight of 18 tons, a plate thickness of 2.3 mm, and a telescope amount of 180 mm at the tail end, the pressing force of the straightening cylinder is set to 150 kgf, and the straightening roll acts in the straightening direction.
The coil was turned. As a result, the telescope amount was reduced to 32 mm in one rotation, and the telescope was almost completely eliminated in one rotation.

The present invention is not limited to the above-described apparatus. For example, straightening rolls may be provided on both sides of a cradle roll, and straightening may be performed from both sides by appropriately using the straightening rolls on both sides. A plurality of straightening rolls may be provided.

[0018]

According to the present invention, there is an excellent effect that the telescope can be effectively corrected with a simple structure without damaging the coil.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a telescope correction device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a telescope correcting method according to an embodiment of the present invention.

FIG. 3 is a front view of a telescopic correction device showing a conventional technique.

FIG. 4 is a side view of a telescopic correction device showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2, 3 Cradle roll 4 Driving device 5 Pressing means (pressing cylinder) 6 Straightening roll 51 Main frame 52 Guide frame 53 Guide rod 54 Moving mechanism 55 Moving piece 56 Press plate 57 Press cylinder C Coil L Coil lifter T Tail end

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Taichi Kukizaki, Inventor 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Chiba Works, Ltd. (72) Inventor Toshio Imazeki 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Corporation Chiba Works

Claims (2)

[Claims] 1. A straightening method for straightening a telescope at a tail end of a coil of a coil of a coil after winding, wherein the coil after winding is placed on two or more horizontal cradle rolls, and is wound in a winding direction. A telescope correcting method for a steel strip coil, wherein a telescope portion at the tail end of the coil is pressed in the width direction while rotating. 2. A straightening device for correcting a telescope at a tail end of a coil of a steel strip coil after winding, wherein the coil is mounted.
A drive device (4) for driving at least one of the cradle rolls (2, 3) and rotating at least one of the cradle rolls (3) to rotate the coil in a winding direction;
The cradle roll (2, 2) comprises a pressing means (5) for pressing the telescope portion at the coil tail end in the width direction and a correcting roll (6) attached to the tip thereof.
3) A telescope correcting device for a steel strip coil, wherein the device is disposed on at least one side surface of the coil.