JP3202813B2 - Sheet bar coil winding / rewinding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding and rewinding a sheet bar coil, and more particularly to an apparatus for rewinding a coil at the leading edge of a rewind which is left when unwinding a coil.

[0002]

2. Description of the Related Art A sheet bar wound in a coil shape is
The sheet bar coil is rewound by inserting a claw at the tip of the peeler arm inside the outermost layer of the coil, and rotating the coil in this state. By the way, in the coil completely wound up to the rearmost end in the winding process of the sheet bar, the coil is wound around the foremost end of the rewinding (corresponding to the rearmost end in the winding process) when the coil is unwound. For example, in a downstream process, a plurality of coils are butt-joined one after another at their leading and trailing ends and continuously rolled (see, for example, Japanese Patent Application Laid-Open No. 4-8910).
9), a displacement occurs in the thickness direction at the butted portion during joining (hereinafter referred to as misalignment), and a good joined portion cannot be obtained, causing the coil to break and separate during rolling. There was a defect. In addition, the coil box of the steruco type (JP-B-51-26317, JP-B-52-453)
(Refer to No. 04 gazette)), the winding target is not completely wound up to its rear end, so there is no problem of winding, but such a winding system is adopted. In such a case, the rear end of the coil is likely to be cooled, and it is necessary to heat at least that part and take measures to suppress the temperature drop. At the moment, it is necessary to take care that the last end of the winding does not bend when it is carried into the heat insulation furnace, and it is difficult to handle it and it is difficult to realize a smooth operation.

[0003]

SUMMARY OF THE INVENTION In rewinding a sheet bar, it is necessary to reduce the leading edge of the rewinding, and particularly to realize endless rolling in which a plurality of coils are connected one after another to perform continuous rolling. It is an object of the present invention to propose an advantageous winding / unwinding device.

[0004]

According to the present invention, there is provided a driving roll for mounting a sheet bar coil and rotating the sheet bar coil in a state where the coil is mounted on the driving roller. A peeler arm having a claw inserted and rewinding the coil under rotation of the sheet bar coil, wherein a drive means for moving the claw in a direction approaching or separating from the arm is disposed on the peeler arm. Wherein the claw has a profile roll that rolls along the surface of the sheet bar coil and is swingable about a pivot pin, and a roller that is rotatable about the pivot pin. And a sheet bar coil winding and rewinding device.

FIG. 1 shows the structure of an apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a sheet bar wound in a coil shape;
Reference numerals a and 2b denote rolls on which the sheet bar coil 1 is placed. At least one of the rolls 2a and 2b has a drive source and winds the sheet bar in a coil shape or in a coil shape. The seat bar can be rotated. 3 is a sheet bar coil 1
Arm 4 having a function of enabling approach / separation to / from the coil 4 is a claw arranged at the tip of the peeler arm 3, and this claw 4 is the outermost layer 1a at the forefront of coil rewinding.
The claw 4 has a roll 4a that rolls along the surface of the coil 1 and has a pivot pin 4b.
And the pin 4b
Has a roller 4c rotatable around the center. Reference numeral 5 denotes a driving means for moving the pawl 4 in a direction to approach / separate from the peeler arm 3, and the driving means 5 is, for example, a hydraulic cylinder. Reference numeral 6 denotes a guide rod connected to the pawl 4, and this guide rod 6
Moves along the groove 3a formed in the groove.

In order to rewind the sheet bar coil 1 wound in a coil shape using the apparatus having the above configuration, first, FIG.
As shown in FIG. 3A, the peeler arm 3 is moved up, down, left, and right as needed to bring the trailing roll 4a into contact with the outer surface of the coil. And the sheet bar coil 1 is positioned at the leading end of the winding. Then, in this state, as shown in FIG. 2B, the peeler arm 4 is lowered to insert the claw 4 inside the outermost layer 1a of the coil, and the movement of the peeler arm is stopped when the tip end of the coil reaches the roller 4c. . Next, as shown in FIG. 2C, the claw 4 provided at the tip of the peeler arm 3 is moved away from the arm 3, and the operation at this time corrects the curl of the tip of the coil 1 and is shown in FIG. 2D. As described above, the rolls 2a and 2b are driven while maintaining the posture of the peeler arm 3 and the claw 4 as they are, and the rewinding of the sheet bar coil 1 is started.

In the winding mode in which the coil box of STELCO is applied, the object to be wound is not completely wound, so that the rear end thereof remains straight as shown in FIGS. 3A and 3B. As shown in FIGS. 4a and 4b, there is no possibility that the winding at the leading edge of the rewinding at the time of rewinding remains. However, as described above, it is difficult to apply such a winding method to endless rolling in which a plurality of coils are connected one after another and rolling is performed.

In the present invention, the winding / rewinding device is constituted, in particular, the claw 4 at the tip of the peeler arm 3 can be moved in a direction approaching or separating from the peeler arm 3, and this operation reduces the winding of the coil. Therefore, even when the ends of the sheet bar coils 1 are joined by abutting each other, the misalignment is extremely small.

FIG. 5 shows an example in which the rewinding device according to the present invention is applied to a continuous hot rolling facility for sheet bars. Usually, in order to perform endless rolling of a sheet bar using this kind of equipment, the sheet bar 1 finished to a predetermined thickness by the rough rolling mill 7 is wound in a coil shape on the exit side, and then wound. The coils are sequentially rewound, and the rear end of the preceding sheet bar and the front end of the succeeding sheet bar are butt-joined by the heat joining device 8 and then fed to the finishing mill group 10 via the scale breaker 9 to be fed to the desired position. It is finished to a strip having the thickness and width of the sheet. In particular, in the joining apparatus of the sheet bar 1, the joining is performed by heating and pressing in a state where the rear end of the preceding sheet bar and the tip of the succeeding sheet bar are abutted. Therefore, if there is a misalignment in the state where the front end and the rear end of the sheet bar are abutted, it is not possible to obtain sufficient joint strength at the joint, and there is a possibility that the sheet bar will break off and separate from it during rolling. There was. However, in the present invention, the winding of the coil can be reduced in advance prior to the joining of the sheet bar, so that there is almost no difference in the butted state of the sheet bar, and a good joint can be obtained. The joined sheet bars will not break apart during rolling.

[0009]

[Example] Roughly rolled and wound, thickness 20 to 60 mm, width 600
A plurality of sheet bar coils of up to 1900 mm are rewound one after another by applying the equipment shown in Fig. 5 above, and then the sheet bars are butted and joined at their leading and trailing ends and then hot finished. Rolling was performed and the state of fracture separation of the plate during rolling was investigated. As a result, when the sheet bar coil is unwound, straightening is performed at the forefront of the unwinding in order to reduce the curl, and there is no occurrence of fracture separation of the sheet during rolling, and stable rolling can be performed. did it. On the other hand, if the sheet bar coil is simply unwound and joined, and finish rolling is performed (the straightening at the leading edge of unwinding is not performed), the strength at the time of joining the sheet bars is not enough and the plate is broken. It was confirmed that separation was frequent and it was difficult to achieve stable operation.

[0010]

According to the present invention, it is possible to minimize the curl which becomes a problem when unwinding the coiled sheet bar. In particular, the coiled sheet bar is rewound one after another. In endless rolling, in which joining and rolling are performed, break separation of the plate can be avoided as much as possible.

[Brief description of the drawings]

FIGS. 1a and 1b are explanatory views of the configuration of an apparatus according to the present invention.

FIGS. 2a to 2d show the operating states of the device according to the invention.

FIGS. 3A and 3B are diagrams showing winding and rewinding states of a coil to which a steleco coil box is applied; FIGS.

FIGS. 4A and 4B are views showing a remaining state of the winding at the leading end of the rewinding of the sheet bar coil. FIGS.

FIG. 5 is a diagram showing a configuration of a continuous rolling facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet bar coil 2 Roll 3 Peeler arm 4 Claw 5 Driving means 6 Guide rod 7 Rough rolling mill 8 Joining device 9 Scale breaker 10 Finishing rolling mill group

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshisada Takechi 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Chiba Works (72) Inventor Hideyuki Nikaido 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Inside the Chiba Works, Steel Works Co., Ltd. (72) Norio Takashima, inventor No. 1, Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Prefecture Inside the Chiba Works, Chiba Works, Ltd. Harima Heavy Industries Co., Ltd. Yokohama No. 2 Factory (72) Inventor Kazuyuki Sato 1 Shinnakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima-Harima Heavy Industries Co., Ltd. Yokohama No. 2 Factory (56) References JP-A-55-81020 (JP) JP-A-63-160724 (JP, A) JP-A-59-220214 (JP, A) JP-A-3-68918 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 19/10 B21C 47/00 B21C 47/34 B21D 43/02 B65H 23/182

Claims (1)

(57) [Claims] 1. A driving roll for mounting a sheet bar coil and rotating while the sheet bar coil is mounted, and a driving roll inserted into the sheet bar coil at the foremost point of rewinding the sheet bar coil along the outermost side of the coil and rotating the sheet bar coil. And a peeler arm having a claw for rewinding the coil, wherein a driving means for moving the claw in a direction approaching / separating from the arm is disposed on the peeler arm, and the claw is provided with a sheet bar coil. A roll that rolls along the surface of the rocker and can swing about a pivot pin,
Having a roller rotatable about the pivot pin,
A sheet bar coil winding and rewinding device.