JP2003266121A - Steel strip delivering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deliver a steel strip S from a pay-off reel 1 in a consistently traveling condition without any meandering or sheet escape. <P>SOLUTION: After the outer circumference of a coil is held by a holding roll 17, the holding pressure of the holding roll 17 is reduced to bring side guides 22R and 22L into contact with both ends in the width direction of the steel strip S, and the steel strip S is delivered from the pay-off reel 1. Upper displacement of the steel strip S is regulated by the holding roll 17, and the displacement in the width direction is regulated by the side guides 22R and 22L. As a result, the traveling condition of the steel strip S delivered from the pay-off reel 1 becomes consistent. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unwinding device for feeding a steel strip from a payoff reel to a continuous processing line without meandering. [0002] A steel strip fed to a continuous processing line such as rolling, pickling, heat treatment, and plating is paid out from a pay-off reel, and the tail of the preceding steel strip is welded to the tail of the preceding steel strip. Is done. When sending the top of the subsequent steel strip to the welding machine,
Meandering or bumping may impede the threading, and the top of the succeeding steel strip that has reached the welding machine may deviate from its proper position. The misalignment makes it difficult to align the tail of the preceding steel strip with the top of the succeeding steel strip and necessitates position correction prior to welding. In order to suppress the positional deviation, a method of passing a steel strip while correcting the shape of the steel strip by a feed leveler, a method of restricting meandering of the steel strip by a side guide provided on a passing plate table, and the like are adopted. In the method of restricting the meandering of the steel strip with the side guide, the side guide rolls 2 and 2 are arranged on both sides in the width direction of the steel strip S paid out from the payoff reel 1,
The steel strip S is centered (FIG. 1). The side guide rolls 2, 2 are usually provided near a welding machine located downstream of the payoff reel 1. [0004] One of the causes of the irregular running of the steel strip S paid out from the payoff reel 1 is as follows.
There is a misalignment of the steel strip S wound on the payoff reel 1. Pay off reel 1
When the steel strip is fed out and fed into the feed leveler, the top of the steel strip passes through the board diagonally and becomes a plate escape. On the other hand, even if the steel strip S is forcibly centered by the side guide rolls 2 and 2, the winding deviation of the coil cannot be corrected, and meandering occurs at the winding deviation portion. That is, the side guide rolls 2 and 2 cannot restrict meandering due to winding deviation. SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem, and it is intended to suppress the influence of winding deviation at a position where a steel strip is fed from a payoff reel. The purpose of this is to stabilize the running state of the steel strip and send it out to a continuous processing line. In order to achieve the object, the unwinding device of the present invention is provided with a rotatable press roll provided at the tip of a swingable beam, and a coil provided movably along a direction orthogonal to the longitudinal direction of the beam. A side guide that comes into contact with both ends in the width direction of the steel strip, and an air cylinder that opens and closes the side guide in the width direction of the steel strip, and the air cylinder is driven after the pressing force of the presser roll applied to the outer periphery of the coil is reduced. It is characterized by the following. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An unwinding apparatus 10 according to the present invention includes a beam 12 rising from a pedestal 11 (FIG. 2).
When the hydraulic cylinder 14 is expanded and contracted by the power unit 13 mounted on the pedestal 11, the beam 12 swings around the pivot point 15 between the operating position (solid line) and the standby position (dotted line).
A press roll 17 is rotatably provided at the tip of the beam 12 via a bracket 16. A side adjustment mechanism 20 is attached to the beam 12 at a position closer to the pedestal 11 than the press roll 17. The side adjusting mechanism 20 includes two guide rails 21 and 21 as shown in FIG. 3 showing a partial cross section of the unwinding device 10 viewed from the direction A (FIG. 2).
Side guides 22R, 22L movable along
The air cylinders 23U and 23D are incorporated inside the guide rails 21 and 21. [0007] One air cylinder 23U has a top 25L in contact with the tip of a cylinder rod 24U on which a cylinder cover 26U is mounted. The top 25L has a substantially cubic shape, and the other air cylinder 2
The 3D base touches. The cylinder cover 26U is also attached to the cylinder rod 24D of the air cylinder 23D, and the top 25R is located near the tip of the cylinder rod 24U. Air cylinder 23U near the notch of top 25R
Is located at the base. Two rods 27UL, 27DL and 27UR, 2 from each top 25L, 25R
7DR protrudes left and right in FIG. Rod 27U
Cylinder covers 28UL and 28DL are mounted on L and 27DL, and a side guide 22L is fixed to the tip.
Rod 27UR, 27DR also has cylinder cover 28U
R and 28DR are attached, and a side guide 22R is fixed to the tip. Hereinafter, the paying out of the coil using the unwinding device of the present invention will be described. The coil conveyed from the previous process is mounted on the payoff reel 1, and the unwinding device 10 is mounted above the coil.
Position. Next, the beam 12 is turned counterclockwise in FIG. 2, and the presser roll 17 is lowered until the coil is lowered. After adjusting the top position of the steel strip S by pressing down the outer peripheral portion of the coil with the presser roll 17, the pressing force of the presser roll 17 is reduced to weaken the constraint on the outer peripheral portion of the coil. When the outer peripheral portion of the coil is close to free due to a decrease in the pressing force of the presser roll 17, the air guides 23U and 23D are driven to drive the side guides 22R and 2R.
Open and close 2L. The drive timing of the air cylinders 23U and 23D is controlled by a sequential control mechanism incorporated in the power unit 13. Side guide 22R, 22
The opening / closing operation of L corrects the coil misalignment,
Since the tip of the steel strip S at the outer periphery of the coil is a free end without coming into contact with other equipment, the force required to correct the winding deviation is extremely small. Also, the left and right tops 25L, 25R
Abuts against the bases of the air cylinders 23U and 23D, thereby restricting the closing operation of the side guides 22R and 22L. Therefore, the steel strip S on the outer peripheral portion of the coil is centered. Next, the centered steel strip S on the outer peripheral portion of the coil is pulled out by the rotation of the payoff reel 1 and fed to a feed leveler (not shown) by a feed roll (not shown). When the tip of the steel strip S reaches the feed leveler, the air cylinders 23U, 23D
To open the side guides 22R and 22L. Since the steel strip S is dispensed from the pay-off reel 1 while correcting the coil displacement, there is no meandering or plate escape due to the coil displacement, and the steel strip S is welded to the tail of the preceding steel strip under stable conditions, and is used in a continuous processing line. Operation becomes steady. As described above, the unwinding device according to the present invention controls the upward displacement of the steel strip with the presser roll, and removes the steel strip from the payoff reel while controlling the width direction with the side guide. Due to the payout, the running state of the steel strip sent from the payoff reel is stabilized, and meandering is suppressed. Therefore, the steel sheet can be fed into the continuous processing line without any troubles such as meandering and plate escape, and welding to the tail of the preceding steel strip becomes easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 A conventional unwinding device using a side guide roll [FIG. 2] An unwinding device equipped with a holding roll and a side guide according to the present invention [FIG. 3] The unwinding device 10: Unwinding device 12: Beam 17: Pressing roll 20: Side adjustment mechanism 22R, 22L: Side guide 23U, 23D: Air cylinder

Continuation of front page    (72) Inventor Satoshi Nouchi             962-14 Hojo, Toyo City, Ehime Prefecture Nisshin Steel Co., Ltd.             Company Toyo Works (72) Inventor Takumi Uchiyama             962-14 Hojo, Toyo City, Ehime Prefecture Nisshin Steel Co., Ltd.             Company Toyo Works F term (reference) 3F104 AA05 BA15 CA03 CA28 FA09                       FA12                 4E026 GA02 GA06 GA20

Claims (1)

Claims: 1. A rotatable press roll provided at the tip of a swingable beam, and both ends in the width direction of the coil are provided movably along a direction orthogonal to the longitudinal direction of the beam. A side guide that comes into contact with, and an air cylinder that opens and closes the side guide in the width direction of the steel strip, and the air cylinder is driven after the pressing force of the presser roll applied to the outer periphery of the coil is reduced. Steel strip unwinding device.