JPH0910831A - Coiling method and its device - Google Patents

Abstract

PURPOSE: To prevent coil receiving rolls and a driving system thereof from damages by forming a true circle coil on coil receiving rolls. CONSTITUTION: In a coiling method wherein at least three bending rolls 11 and a pair of left and right coil receiving rolls 13 are arranged in the vertical direction, and a coil 14 is formed on coil receiving rolls 13 by coiling a rolled steel sheet 2a transferred on coil receiving rolls 13 while being bent through between bending rolls 11, a sleeve 21 is placed on coil receiving rolls 13 and the sleeve 21 is driven to rotate by the rotation of coil receiving rolls 13. The rolled steel sheet 2a which is bent through bending rolls 11 is drawn between coil receiving rolls 13 and the sleeve 21 to be coiled on the sleeve 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method and a winding machine, and more particularly to winding a rolled steel sheet which is curved between bending rolls and is transferred onto a coil receiving roll to form a perfect circular coil. The present invention relates to a winding method and a winding machine for doing this.

[0002]

2. Description of the Related Art Generally, in a hot strip rolling line, a plate-like slab from a continuous casting machine is reversely rolled back and forth to roll thinly, and if rolled long, the steel sheet will not be placed on the rolling line. The rolled steel sheet that has passed through the rough rolling mill is once wound into a coil, and the wound coil is fed to the finishing rolling mill side to secure a short rolling line.

That is, as shown in FIG. 4, the rolling line 1
In order to roll the plate-shaped slab 2 coming out of the continuous casting machine, several rough rolling mills 3 and several finishing rolling mills 4 are arranged in front of and behind the transport direction of the slabs 2. An intermediate winder 5 that winds the steel plate 2a rolled by the rough rolling mill 3 into a coil shape is interposed between and the finish rolling mill 4. The coil 6 wound up by the winding machine 5 is unwound as it is, passes through the finishing rolling machine 4 in one pass, and is wound up again in the form of a coil by the rear winding machine 7.

Specifically, as shown in FIG. 5, the intermediate winding machine 5 includes a bending roll 11 composed of at least three rolls.
And a coil receiving roll 13 composed of a pair of left and right rolls arranged below the bending rolls 11 with a guide roll 12 sandwiched between them, and the three bending rolls 11 are a pair of left and right rolls arranged above. Roll 11
The steel plate 2a is sandwiched between the rolls 11a and 11b and the roll 11c arranged in the lower part, and the steel plate 2a is curved downward in an arc shape and guided onto the coil receiving roll 13. The curved steel plate 2a is a coil receiving roll 13 that is rotationally driven.
The coil 6 is formed by hitting the rear roll 13b and curving upward to be laminated in multiple layers.

[0005]

By the way, the rolled steel plate 2
The leading end of a is the roll 13 at the rear of the coil receiving roll 13.
Although it is ideal that the coil 6 of a perfect circle is formed by curving upward upon hitting b, the steel plate 2a that has passed through the rough rolling mill 3 has a high temperature and is thinly rolled. As shown in the drawing, when the tip of the steel plate 2a rises upward from the coil receiving roll 13, the tip of the steel plate cannot endure its own weight and is crushed, causing a jump phenomenon and failing to form a good coil 6. is there. Therefore,
There is a problem that the coil receiving roll 13 and its drive system are damaged.

The present invention has been devised in order to effectively solve the above problems. It is an object of the present invention to provide a winding method and a winding machine that make it possible to form a perfect circular coil on a coil receiving roll and prevent damage to the coil receiving roll and its drive system. And

[0007]

According to the present invention, at least three bending rolls and a pair of left and right coil receiving rolls are arranged one above the other, and the rolling is performed by bending between the bending rolls and transferred onto the coil receiving rolls. In a winding method for winding a steel plate on a coil receiving roll to form a coil, a sleeve is placed on the coil receiving roll, and the sleeve is rotationally driven by rotation of the coil receiving roll.
The rolled rolled steel sheet that has passed through the bending roll is drawn between the coil receiving roll and the sleeve and wound around the sleeve.

According to the present invention, at least three bending rolls and a pair of left and right coil receiving rolls are arranged one above the other, and a rolled steel sheet which is curved between the bending rolls and is transferred onto the coil receiving rolls is placed on the coil receiving rolls. In order to wind the rolled steel plate placed on the coil receiving roll and rotationally driven by the rotation of the coil receiving roll to be transferred onto the coil receiving roll in a winding machine for winding to form a coil. And a heating means for heating the coil receiving roll.

Further, according to the present invention, at least three bending rolls and a pair of left and right coil receiving rolls are vertically arranged, and the rolled steel sheet which is curved between the bending rolls and is transferred onto the coil receiving rolls is coiled. In a winding machine for winding on a roll to form a coil, the rolled steel plate placed on the coil receiving roll and rotationally driven by rotation of the coil receiving roll and transferred onto the coil receiving roll is wound. It comprises a sleeve for taking, a sleeve supply device for supplying the sleeve onto the coil receiving roll, and a heating device for preheating the sleeve supplied by the sleeve supply device.

[0010]

In the above winding method, even if the rolled steel sheet which is curved and is transferred onto the coil receiving roll is crushed by its own weight, it is kept in a perfect circle by the sleeve rotating on the coil receiving roll. Is.

In the winding machine, the sleeve is heated by heating the coil receiving roll to prevent the high temperature rolled steel plate wound around the sleeve from being cooled by the sleeve. Further, the sleeve supplied to the coil receiving roll by the sleeve supply device is preheated by a heating device to prevent the high-temperature rolled steel plate wound around the sleeve from being cooled by the sleeve. Is.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

Since the hot rolling line has been described above, its explanation is omitted. The same members as those in the conventional example are designated by the same reference numerals, and the winding method of the present invention will be described below.

As shown in FIG. 1, in order to form the coil 14 by winding the rolled steel plate 2a rolled by the rough rolling mill 3,
A bending roll 11 composed of three rolls is arranged above, and a coil receiving roll 13 composed of a pair of left and right rolls is arranged below the bending roll 11 with a guide roll 12 interposed therebetween. The sleeve 21 is placed.

The rolled steel plate 2a rolled by the rough rolling mill 3 is 3
One of the two bending rolls 11 is sandwiched between a pair of right and left rolls 11a and 11b arranged on the upper side and a lower roll 11c to engage with the guide roll 12 while being curved downward in an arc shape to form a coil receiving roll. 13 is transferred to.

In particular, the sleeve 21 placed on the coil receiving roll 13 is also rotated by the rotation of the coil receiving roll 13, and the rolled steel plate 2a transferred onto the coil receiving roll 13 is rotated by the coil receiving roll 13 and the sleeve rotating above it. It will be drawn between 21 and 21. Pulled rolled steel plate 2a
Even if the tip portion of the sleeve 21 hits the rear roll 13b and rises upward and tries to be deformed by its own weight, the surface portion of the sleeve 21 regulates the rolled steel sheet 2a in an arc shape along the surface of the sleeve 21. The coil 1 held in a perfect circle with the sleeve 21 as the winding core on the coil receiving roll 13 by being twisted around the rotation of
4 can be formed. Therefore, the rolled steel plate 2a
Therefore, the coil receiving roll 13 and its drive system can be prevented from being damaged in advance.

In the above embodiment, the down coiler in which the bending roll 11 is arranged in the upper part and the coil receiving roll 13 is arranged in the lower part has been described, but the same structure can be adopted in the up coiler. That is, even when the coil receiving roll 13 is arranged on the upper part and the bending roll 11 is arranged below the coil receiving roll 13, if the sleeve 21 is placed on the upper coil receiving roll 13, the sleeve 21 will be a perfect circle having a winding core. The coil 14 can be obtained.

Further, in this way, the rolled steel plate 2a is wound around the sleeve 21 on the coil receiving roll 13 to form the coil 14
In the winding machine 5 for forming the coil, the coil receiving roll 13
It is configured to provide a heating means 22 for heating the. That is, as shown in FIG. 1, a heating circuit 23 for heating the coil receiving roll 13 is formed, and the heating circuit 23 causes the coil receiving roll 13 to generate resistance heat to heat the sleeve 21.

The rolled steel plate 2a rolled by the rough rolling mill 3 has a high temperature, and when the rolled steel plate 2a is wound around the sleeve 21 as it is, the rolled steel plate 2a absorbs heat by the sleeve 21. The temperature distribution in the direction is different.

If the sleeve 21 is heated, it is possible to prevent the high-temperature rolled steel plate 2a from being cooled by the sleeve 21 and to keep the temperature distribution uniform. When the coil 14 formed on the coil receiving roll 13 is reversely rotated and fed out to the finish rolling mill 4, the sleeve 21 remains on the coil receiving roll 13.
Will be heated again by the heating circuit 23.

2 and 3, the rolled steel plate 2a is wound around the sleeve 21 on the coil receiving roll 13 to form the coil 14
And a sleeve supply device 24 for supplying the sleeve 21 onto the coil receiving roll 13,
A heating device 25 for heating the sleeve 21 to be supplied is provided on the coil receiving roll 13.

The sleeve supply device 24 is composed of a mandrel 26 arranged on one side of the coil receiving roll 13 in the axial direction. The mandrel 26 is supported so as to be able to move up and down, and an inner shaft 27 and an outer shaft 28 covering the inner shaft 27 are mutually connected. It is designed to slide and expand and contract in the horizontal direction. Heating device 2
5 is constituted by a heating furnace 29 arranged below the coil receiving roll 13 and the mandrel 26, and the heating furnace 29 accommodates a plurality of sleeves 21 to be supplied onto the coil receiving roll 13 and these sleeves 21. 21 is heated and kept at a predetermined temperature by induction heating or gas heating. The upper part of the heating furnace 29 is an openable / closable sleeve discharge port 31 for discharging the lifted-up sleeve 21 upward.
Is formed. Although not shown, for example, the sleeve 21
The sleeve 21 is lifted by a lifting device such as a jack for placing and lifting the jack or a crane for holding and lifting the sleeve.
Are lifted up above the heating furnace 29.

Therefore, in order to supply the sleeve 21, the sleeve 21 in the heating furnace 29 heated to a predetermined temperature is discharged upward through the sleeve discharge port 31, and the elongated mandrel 26 is inserted into the sleeve 21. To be done. When the mandrel 26 rises while maintaining this inserted state, the sleeve 21 is hooked on the mandrel 26,
The sleeve 21 is transferred onto the coil receiving roll 13 by extension of the mandrel 29, and is placed on the coil receiving roll 13 by lowering of the mandrel 26. After this, the mandrel 26 is shortened and stands by for the next supply of the sleeve 21.

The sleeve 21 remaining on the coil receiving roll 13 after the coil 14 formed by the coil receiving roll 13 is fed to the finish rolling mill 4 is discharged by the expansion and contraction movement of the mandrel 26. For example, by extending the extension stroke of the mandrel 26, the sleeve 21 may be discharged to the space on the opposite side of the mandrel 26 with the coil receiving roll 13 interposed therebetween, or the mandrel 26 may be shortened. Coil receiving roll 1
The sleeve 21 on the upper part 3 may be retracted, transferred to the elevating means, and returned to the inside of the heating furnace 29. Sleeve 2
If 1 is pulled back into the heating furnace 29 and supplied again, the sleeve can be smoothly supplied and discharged, and the space of the sleeve 21 can be saved.

[0025]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) In claim 1, since the rolled steel plate is wound around the sleeve on the coil receiving roll, the roundness of the coil can be secured and damage to the coil receiving roll and its drive system can be prevented. it can.

(2) In claim 2, since the coil receiving roll is heated, it is possible to prevent the high temperature rolled steel plate from being cooled by the sleeve, and it is possible to maintain the quality of the rolled steel plate.

(3) In claim 3, since the preheated sleeve is supplied, it is possible to prevent the hot rolled steel sheet from being cooled by the sleeve, and to maintain the quality of the rolled steel sheet.

[Brief description of the drawings]

FIG. 1 is a diagram showing a winding method of the present invention.

FIG. 2 is a front view showing a winder.

FIG. 3 is a side view showing the winder.

FIG. 4 is a side view showing a rolling line.

FIG. 5 is a side view showing a conventional winding machine.

FIG. 6 is a view showing a conventional winding state.

FIG. 7 is a diagram showing a conventional winding state.

[Explanation of symbols]

 2a Rolled steel plate 5 Winding machine 11 Bending roll 13 Coil receiving roll 14 Coil 21 Sleeve 22 Heating means 24 Sleeve supply device 25 Heating device

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuyuki Sato No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi Kawashima Harima Heavy Industries, Ltd. Yokohama Second Factory

Claims (3)

[Claims] 1. At least three bending rolls and a pair of left and right coil receiving rolls are arranged one above the other, and a rolled steel sheet that is bent between the bending rolls and is transferred onto the coil receiving roll is transferred onto the coil receiving roll. In a winding method for winding to form a coil, a sleeve is placed on the coil receiving roll, the sleeve is rotationally driven by the rotation of the coil receiving roll, and the rolled steel plate is curved by passing through the bending roll. The coiling roll is drawn between the coil receiving roll and the sleeve to be wound on the sleeve. 2. At least three bending rolls and a pair of left and right coil receiving rolls are arranged one above the other, and a rolled steel sheet that is bent between the bending rolls and is transferred onto the coil receiving roll is transferred onto the coil receiving roll. In a winding machine for winding to form a coil, a sleeve for winding the rolled steel sheet placed on the coil receiving roll and rotationally driven by rotation of the coil receiving roll to be transferred to the coil receiving roll. And a heating means for heating the coil receiving roll in advance. 3. A rolled steel plate on which at least three bending rolls and a pair of left and right coil receiving rolls are arranged one above the other and which is bent between the bending rolls and is transferred onto the coil receiving rolls. In a winding machine for winding to form a coil, a sleeve for winding the rolled steel sheet placed on the coil receiving roll and rotationally driven by rotation of the coil receiving roll to be transferred to the coil receiving roll. A winding machine comprising: a sleeve supply device for supplying the sleeve onto the coil receiving roll; and a heating device for preheating the sleeve supplied by the sleeve supply device.