JP3324066B2 - Winding / unwinding equipment and its control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding / unwinding apparatus for winding / unwinding a material to be rolled and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, in a rolling equipment for continuously rolling a material to be rolled such as a sheet bar or a slab, a material to be rolled is rough-rolled and finish-rolled one by one to a rolled plate having a desired thickness. Had been rolling. However, in this case, the line is stopped due to poor biting of the material to be rolled in the finish rolling mill, and the yield is reduced due to a defective shape of the leading and trailing ends of the material to be rolled.

For this reason, the material to be rolled by the rough rolling mill is once wound up by a winding device and unwound, and then the rear end of the material to be rolled and the front end of the material to be rolled are removed. A rolling method of continuously supplying and rolling to a finishing mill has been adopted. FIG. 2 is an overall configuration diagram of “a continuous hot rolling equipment for billets” related to the present invention.
In this figure, 1 is a rough rolling mill, 2 is a joining device that joins the rear end of the preceding steel slab A and the tip of the succeeding steel slab B, 3 is a finishing rolling mill group, and has been joined by the finishing rolling mill group 3. Is continuously rolled. Also,
Reference numeral 4 denotes a bar winding / rewinding device arranged on the upstream side of the joining device 2, and coil positions 4a to 4 in which three (or three or more) coarsely rolled coils can be arranged.
4c, winding, rewinding start and rewinding of the coil can be performed in 4a, rewinding start and rewinding can be performed in 4b, and only rewinding can be performed in 4c. This rolling equipment is characterized in that finish rolling can be continuously performed by the joining device 2 and the winding / unwinding device 4.

FIG. 3 is a partial configuration diagram of the winding / rewinding equipment 4 in FIG. 2, and shows two coil positions 4a,
4b is shown. When the coil is to be rewound at the coil position 4a, first, the roughly rolled bar is wound in the direction of arrow C, and the coil 5 is temporarily stopped when its tail end 5a (winding end) comes to a predetermined position. And peeler 6
Is inserted between the tail end 5a and the coil 5, and the cradle rolls 7a, 7b (support rolls) are rotated to rotate the coil 5
Is reversed in the direction of arrow D to start coil rewinding. While continuing the rewinding, the core rod 8 inserted into the center hole of the coil 5 (the coil inner winding circle 5b) is turned,
The coil 5 is moved to the adjacent coil position 4b, and rewinding is continued.

Similarly, when rewinding the coil at the coil position 4b, the coil 5 wound at the coil position 4a is stopped when its tail end 5a comes to a predetermined position, and the coil 5 The core rod 8 inserted into the winding circle 5b is turned to move the coil 5 to the adjacent coil position 4b, and then the peeler 6 is inserted between the tail end 5a of the coil and the coil 5, and the cradle roll 7
a and 7b are reversed so that the coil 5 is reversed to start rewinding at the coil position 4b.

[0006]

When continuous rolling is performed while joining billets, it is necessary to start unwinding from the position 4a, and it is necessary to start unwinding from the position 4b. In the conventional winding and rewinding equipment shown in FIG. 3, when the coil 5 is transferred by the core rod 8, the tail end 5a of the coil may be used. There was a problem that the position was shifted. That is, since the contact position between the core rod 8 and the coil 5 changes depending on the coil diameter, when the coil 5 is lifted by the core rod 8, the coil 5 rotates around the position where the core rod 8 contacts the coil inner winding circle 5b, Also, place the coil in the cradle roll 7 of the next coil position.
Also, when the core rod 8 is placed on the coils 7a and 7b, there is a problem that the coil rotates around one cradle roll as a fulcrum when the core rod 8 separates from the coil inner winding circle. For this reason, the positional relationship between the tail end 5a of the coil and the peeler 6 fluctuates, and it takes a long time to start rewinding, which hinders the operation of the continuous hot rolling equipment. In particular, when the tail end 5a rotates in the direction of arrow C during transfer and is located between the cradle rolls 7a and 7b,
In order to insert the peeler 6 between the tail end 5a of the coil and the coil 5, it may be necessary to reverse the coil 5 by one turn, and the reverse rotation speed by the cradle roll 7 is relatively slow, so that it is equivalent to the start of rewinding. There was a problem that time was lost and it was impossible to join the tail end of the preceding slab and the tip of the following slab.

The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a winding / rewinding facility in which the tail end position does not fluctuate due to coil transfer, and a control method thereof.

[0008]

According to the present invention, there is provided a coil position in which a rolled material to be rolled is wound around a coil, the coil is rotated in a reverse direction and rewinded downstream, and a coil position is provided downstream of the coil position. In a winding and rewinding facility having a plurality of coil positions for unwinding a coil, a core rod is provided between adjacent coil positions, and a core rod is inserted into an inner winding circle of the coil, and the core rod is turned to rotate the adjacent coil. A transfer device for transferring a coil to a position, a pair of cradle rolls provided at each coil position to support and rotate the coil, and a core rod to be in contact with the top of the coil inner winding circle when transferring the coil. And a cradle adjusting device for adjusting the height of one of the cradle rolls.

According to the present invention, a rolled material to be rolled is wound around a coil, the coil is rotated in the reverse direction, and the coil is rewound downstream, and the coil provided downstream of the coil position is rewound. Having a plurality of coil positions, and provided between adjacent coil positions;
A transfer device that inserts a core rod into an inner winding circle of a coil, turns the core rod, and transfers the coil to an adjacent coil position, and a pair of cradle rolls provided at each coil position and supporting and rotating the coil And adjusting the height of each of the cradle rolls at one of the adjacent coil positions so that the core rod contacts the top of the inner winding circle of the coil. A method for controlling a winding / rewinding facility, comprising inserting a core rod into a winding circle, rotating the core rod, and transferring the coil to an adjacent coil position.

According to a preferred embodiment of the present invention, one of the cradle rolls is provided so as to be swingable about a rotation axis spaced from the center axis thereof, and the cradle roll does not change the position of the tail end of the coil. Thus, the swing angle of the cradle is adjusted according to the coil diameter, so that the core rod contacts the coil at the top of the coil inner winding circle and transfers the coil,
It is characterized by the following.

[0011]

According to the structure and method of the present invention, the height of one cradle roll is adjusted so that the core rod contacts the top of the coil inner winding circle when the coil is transferred. Even if the coil is lifted, the coil does not rotate since the contact position between the core rod and the coil inner winding circle is the top of the coil inner winding circle. Also, when placing the coil on the cradle roll of the next coil position, the contact position between the core rod and the coil inner winding circle is also the top of the coil inner winding circle, so when the core rod separates from the coil inner winding circle Coil does not rotate. For this reason, the position of the tail end of the coil does not change due to the transfer of the coil, and the tail end of the coil can always be maintained at a position where it can be immediately opened by the peeler, and rewinding can be started in a short time.

[0012]

Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial configuration diagram of a winding / rewinding facility according to the present invention. In this figure, a winding / rewinding apparatus 10 according to the present invention winds a rolled material to be rolled around a coil 11, reverses the coil 11 and rewinds it downstream, and a downstream of the coil position 12. Coil position 13 provided on the side to rewind the coil
And

The winding / rewinding equipment 10 includes a transfer device 16 provided between adjacent coil positions 12 and 13, a pair of cradle rolls 17a and 17b provided at each of the coil positions 12 and 13, and a cradle. A cradle adjusting device 18 for adjusting the height of the roll 17b. In the transfer device 16, the core rod 15 is inserted into the inner winding circle 11b of the coil, and the core rod 15 is turned to transfer the coil 11 to the adjacent coil position 13. Also, cradle roll 1
7a and 17b support the coil 11 and rotate it. Further, the cradle adjusting device 18
A cylinder 20 for swinging one of the cradle rolls 17b about a rotation shaft 19 spaced from the center axis thereof is provided.
7b can be swung to adjust its height. In this figure, reference numeral 11a denotes a tail end of the coil, 21 denotes a peeler at the start of rewinding, and the peeler 21 can stand by at a position which does not hinder transfer of the coil except at the start of rewinding. ing.

Although FIG. 1 shows only two coil positions, the present invention preferably has three or more coil positions. In this case, a coil position (not shown) provided downstream of the coil position 13 to rewind the coil or a coil position provided further downstream may be configured in the same manner as the coil positions 12 and 13 described above. Good.

According to the method of the present invention, the height of one cradle roll 17b of each of the adjacent coil positions 12, 13 is adjusted so that the core rod 15 comes into contact with the top of the inner coiled circle 11b, and Core rod 1 on inner winding circle 11b
5 is inserted and the core rod 15 is turned to transfer the coil to the adjacent coil position 13. That is, the coil 11
If the diameters of the cradle rolls 17b are different from each other (FIG. 1 shows three coils 11 having different diameters), the swing angle of the cradle roll 17b is adjusted according to the coil diameter so that the position of the tail end 11a of the coil does not change. Thus, the coil is transferred while the core rod 15 and the coil 11 are in contact with each other at the top of the inner coiled circle 11b. The means for stopping the tail end 11a of the coil at the predetermined position at the coil position 12 may detect the tail end 11a with an appropriate sensor, or calculate the tail end position in advance by the control device of the entire rolling equipment. You may. Further, when the transfer device 16 swings, the coil slightly rotates in accordance with the swing angle. Therefore, it is preferable to determine the stop position at the coil position 12 in consideration of this amount in advance.

According to the above-described configuration and method of the present invention, the height of one cradle roll is adjusted so that the core rod contacts the top of the coil inner winding circle when the coil is transferred.
Even when the coil is lifted by the core rod, the coil does not rotate because the contact position between the core rod and the coil inner circle is the top of the coil inner circle. Also, when placing the coil on the cradle roll of the next coil position, the contact position between the core rod and the coil inner winding circle is also the top of the coil inner winding circle, so when the core rod separates from the coil inner winding circle Coil does not rotate. For this reason,
The position of the tail end of the coil does not change due to the transfer of the coil, the tail end of the coil can always be maintained at a position where the end can be immediately opened by the peeler, and rewinding can be started in a short time.

[0017]

As described above, the winding and rewinding equipment of the present invention and the method of controlling the same rotate the coil when the coil is lifted by the core rod and when the coil is placed on the cradle roll of the adjacent coil position. Therefore, there is an excellent effect that the position of the tail end of the coil hardly fluctuates due to the transfer of the coil.

[Brief description of the drawings]

FIG. 1 is a partial configuration diagram of a winding / rewinding facility according to the present invention.

FIG. 2 is an overall configuration diagram of a hot rolling facility according to the present invention.

FIG. 3 is a partial configuration diagram of a conventional winding / rewinding facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rough rolling mill 2 Joining apparatus 3 Finishing rolling mill group 4 Winding / unwinding equipment 4a, 4b, 4c Coil position 5 Coil 5a Tail end (winding end) 6 Peeler 7a, 7b Cradle roll 8 Core rod 10 Winding / Rewinding equipment 11 Coil 11a Tail end 11b Inner winding circle 12,13 Coil position 15 Core rod 16 Transfer device 17a, 17b Cradle roll 18 Cradle adjuster 19 Rotary shaft 20 Cylinder 21 Peeler A Leading steel bar (bar) B Trailing steel Piece (bar) C Winding direction D Unwinding direction R1, R2 Rough rolling mill

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Keigo Murakami 1st Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawajima-Harima Heavy Industries Co., Ltd.Yokohama Second Factory (72) Inventor Tosada Takechi 1 Kawasaki-cho, Kawasaki Steel Corporation (72) Inventor Takao Yute 1, Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Corporation (72) Inventor Takashi Ishikawa 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel (56) References JP-A-63-30118 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21C 47/24 B21B 45/00

Claims (3)

(57) [Claims] A coil position for winding the rolled material around a coil, reversing the coil and rewinding the coil to a downstream side;
A winding / rewinding facility having a plurality of coil positions provided on the downstream side of the coil position for rewinding a coil, wherein the core rod is provided between adjacent coil positions, and a core rod is inserted into an inner winding circle of the coil; A transfer device for rotating a core rod to transfer a coil to an adjacent coil position; a pair of cradle rolls provided at each coil position and supporting and rotating the coil; and a core rod inside the coil when transferring the coil. A winding / rewinding device, comprising: a cradle adjusting device for adjusting the height of one of the cradle rolls so as to contact the top of the winding circle. 2. A coil position in which a rolled material to be rolled is wound around a coil, the coil is rotated in a reverse direction and rewinded to a downstream side, and a plurality of coil positions provided downstream of the coil position to rewind the coil. A transfer device that is provided between adjacent coil positions, inserts a core rod into an inner winding circle of the coil, turns the core rod, and transfers the coil to an adjacent coil position, and a transfer device for each coil position. And a pair of cradle rolls that support and rotate the coil; and a control method of the winding / rewinding equipment, wherein the core rod contacts an adjacent coil position such that the core rod contacts the top of the inner winding circle of the coil. Adjust the height of each cradle roll, insert the core rod into the inner circle of the coil, rotate the core rod, and transfer the coil to the adjacent coil position Winding and rewinding method of controlling the equipment, characterized in that. 3. One of the cradle rolls is provided so as to be swingable about a rotation axis spaced from a center axis thereof, and the cradle rolls are arranged in accordance with the coil diameter so that the tail end position of the coil does not change. Adjust the cradle swing angle,
The method according to claim 2, wherein the core rod contacts the coil at the top of the inner winding circle and transfers the coil.