JP2988202B2 - 4-roll continuous rolling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-roll rolling mill for hot-rolling and manufacturing wire and bar.

[0002]

2. Description of the Related Art Generally, a two-roll rolling method (see FIG. 8), a three-roll rolling method (see FIG. 9) and a four-roll rolling method (see FIG. 10) are known as hot rolling methods for wire rods and steel bars. ing. The feature of these rolling methods is that the rolling direction of the roll 5 with respect to the material to be rolled 19 is 9
Rolling is performed by changing the angle by 0 °, 60 ° in the 3-roll method, and 45 ° in the 4-roll method.

[0003] The present invention relates to a rolling apparatus in a four-roll rolling method among the above rolling methods. In the four-roll method, as shown in FIG. 7, it is necessary to provide a plurality of rolling mills 2 on a pass line 14 and to arrange the rolls 5 of adjacent rolling mills 2 at opposite angles.

[0004] For example, if the roll 5 of the first rolling mill 2 is arranged with its roll axis positioned in the horizontal and vertical directions, the roll 5 of the adjacent rolling mill 2 changes its roll axis direction. It is necessary to arrange them in a state shifted by 45 ° from that. In other words, two different roll 5 arrangement angles are used.
A type of rolling mill 2 is required.

[0005]

The need for two types of rolling mills has the following problems as compared with the case where it can be manufactured with one type of rolling mill. (1) A large number of rolling mills are required, and equipment costs increase. (2) Various types of spare parts such as rolls are required, which makes management complicated and equipment cost high. (3) When replacing spare parts such as rolls, the work method is different, so if mechanized or automated, two types of equipment required for them are required, which increases equipment costs. (4) If spare parts of two types of rolling mills are exchanged by mechanization or the like, work at different places is required, and thus a large work space is required.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a four-roll rolling machine capable of reducing equipment costs and saving work space.

[0007]

Means for Solving the Problems As means for that,
In the four-roll continuous rolling device of the present invention, the traveling carriage movable in a predetermined range, a plurality of four-roll rolling mills mounted in series on the traveling carriage, and the opposing rolls of the adjacent four-roll rolling mill are set to be the same. In order to make the attitude and the attitude relatively tilted by 45 °, a tilt mechanism provided on the traveling carriage to tilt one of the four-roll rolling mills was provided.

The tilting mechanism is mounted on a four-roll rolling mill immovably, has a worm gear on its lower surface, and is tiltable and has a partially arcuate tilting cart. The carrier cart is rotated by human power or power. It is preferable that the worm is attached to the rotating shaft and is screwed to the worm gear of the tilting carriage.

[0009]

When a rolled material such as a wire rod or a steel bar is to be hot-rolled, the rolls of a 4-roll rolling mill adjacent to a traveling carriage are rolled.
By operating the tilting mechanism, the opposing rolls are arranged in a posture inclined at an angle of 45 ° relatively. As a result, the wire and the steel bar can be rolled and manufactured as in the related art.

When the rolls of the rolling mill are exchanged, the traveling cart is moved to a predetermined position, and the tilting mechanism is operated to return the 45-roll tilted four-roll rolling mill to its original position. The opposing rolls of a plurality of adjacent four-roll rolling mills have the same posture, whereby the opposing rolls of the plurality of four-roll rolling mills have the same posture.

After the opposing rolls have the same posture, the rolls are exchanged or the rolls are turned.

In the present invention, a plurality of 4
Since the opposite rolls of the roll rolling mill can be set to the same posture, the rolls of all four roll changers are exchanged or turned by one type of machine when the roll exchange or turning is automatically performed by a machine. be able to. Therefore, equipment costs can be kept to a minimum.

Similarly, since all rolls can be exchanged by one type of machine, compared with the case of exchanging the rolls of a plurality of types of four-roll rolling mills by a plurality of types of machines,
Significant work space can be saved.

Also, in the present invention, the roll arrangement angle of the four-roll rolling mill can be freely changed by the tilting mechanism, and the four-roll rolling mill is made compatible. It is only necessary to prepare one type of four-roll rolling mill, so that the equipment cost can be significantly reduced.

[0015] Accordingly, the number of spare parts such as rolls can be reduced, facilitating management and reducing equipment costs, and reducing the number of spare rolling mills and parts. Space can be reduced.

The tilting mechanism has a 4-roll rolling mill immovably mounted thereon, has a worm gear on its lower surface, and is tiltable and has a partially arcuate tilting cart. If the worm is assembled to the rotating shaft and is screwed to the worm gear of the tilting trolley, the worm rotates to transmit the rotational force to the worm gear, thereby tilting the tilting trolley, The four-roll rolling mill mounted above can be tilted freely.

[0017]

1 to 3 show an embodiment of the present invention. Two 4-roll rolling mills 2 are mounted on one traveling cart 1,
The rear one is fixed (the roll is always maintained in the posture shown in FIG. 4), and the front one is tiltable by 45 ° by the tilting mechanism 3 (the posture is shown in FIG. 5). It is.

The tilting mechanism 3 has a worm gear 7 on its lower surface.
And the worm gear 7 of the tilting carriage 4 which is mounted on the rotating shaft 8 rotated by the handle 9.
The worm 6 is screwed into the worm 6.

The worm 6 is rotated by rotating the handle 9, and the rotational force is transmitted to the worm gear 7 to tilt the four-roll rolling mill 2 immovably mounted on the tilting carriage 4.

In this embodiment, the tilting carriage 4 (four-roll rolling mill 2) is tilted by rotating the handle 9 manually, but is achieved by power from a motor instead of the handle 9. It is also possible.

In the present embodiment, the position of the roll 5 of the four-roll mill 2 is exactly the same as the position of the roll 5 of the adjacent four-roll mill 2 in that it is horizontally and vertically or at an angle of 45 °. In order to maintain the position, the positioning pin 11 which moves up and down by the cylinder 12 and engages with the tilting carriage 4 is provided.

Further, in the apparatus shown in this embodiment,
In order to mount the front four-roll rolling mill 2 on the tilting carriage 4 and the rear four-roll rolling mill 2 on the traveling carriage 1, respectively, a clamp 13 and a cylinder 12 for tightening the clamp 13 are provided. .

FIG. 6 shows an example of using the apparatus of the present invention in a hot rolling mill. When the four-roll rolling mill according to the present invention is on the pass line 14, the rolls 5 of one four-roll rolling mill 2 are arranged horizontally and vertically (see FIG. 4), and the other four-roll rolling mill 2 Roll 5
Are arranged by the tilting mechanism 3 in a posture inclined at 45 ° therefrom (FIG. 5).

The four-roll rolling mill 2 is maintained in such a posture, and the material to be rolled 19 such as a wire rod or a steel bar is hot-rolled.

When a certain hot rolling is completed, the two four-roll rolling mills 2 are conveyed to the roll changing device 15 via the turner 18 while being mounted on the traveling carriage 11.

The traveling vehicle 1 has a plurality of wheels 10 on its bottom surface.
And transports the four-roll rolling mill 2 by freely traveling on rails.

While the traveling carriage 1 transports the four-roll rolling mill 2 to the roll changing device 15, the traveling carriage 1 mounted with the two four-roll rolling mills 2 is also waiting at the standby unit 17. On the pass line 14, this new 4
The hot rolling is performed with the rolling mill 2 positioned.

One of the four-roll rolling mills 2 transported by the traveling carriage 1 to the roll changing device 15 is returned to the original state (horizontal and vertical postures) by the tilting mechanism 3, whereby the four rolling mills 2 are rotated. Opposite roll 5 of roll mill 2
Are located in the same direction.

In this state, the roll 5 is changed by the roll changing device 15 and the roll 5 is changed by the roll turning device 16.
The four-roll rolling mill 2 is conveyed to the standby unit 17 by the traveling carriage 1 after the turning of the rolls 5 and the maintenance of the rolls 5 are performed.

Here, when the exchange of the roll 5 and the turning of the roll 5 are automatically performed by a machine without manual operation, if the posture of the opposing roll 5 is different between the front four-roll mill 2 and the rear one, For example, it is necessary to provide two types of roll exchanging devices 15 or to enable the roll exchanging devices 15 to be able to be tilted by 45 ° in correspondence with two types of four-roll rolling mills 2.

However, in such a case, the equipment cost is inevitably high. However, in this embodiment, one of the four-roll mills 2 is rotated by 45 ° by the tilting mechanism 3 before being conveyed to the roll changing device 15. Since the roll 5 is tilted and returned to the original position, and the rolls 5 are set in the horizontal and vertical positions in the same manner as in the other four-roll rolling mill 2, all the rolls 5 can be replaced by one type of roll changing device 15. And equipment costs can be reduced.

[0032]

As described above, according to the present invention, one of the four-roll rolling mills can be tilted by 45 ° by the tilting mechanism, and the rolls of the four-roll rolling mill are the same as or 45 ° from the rolls of the other four-roll rolling mill. By adopting an inclined posture, 1
Since the four-roll mills of various types were made compatible,
It is possible to reduce the number of four-roll rolling mills required for two types to one type, thereby reducing equipment costs.

Similarly, the number of types of spare parts involved can be reduced, thereby further reducing equipment costs.

In addition, since a single type of four-roll mill can be used, only one type of machinery and equipment for roll exchange and roll turning can be reduced, thereby also reducing equipment costs. In addition to the above, it is possible to save a large amount of work space as compared with a case where roll exchange or the like is performed by a plurality of types of machines.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a simplified configuration and arrangement of an embodiment of the present invention.

FIG. 2 is an enlarged front view of a main part of the embodiment shown in FIG. 1;

FIG. 3 is a front view of another embodiment of the embodiment shown in FIG.

FIG. 4 is a front view showing a state in which the rolls in the apparatus of the present invention are in horizontal and vertical postures.

FIG. 5 is a front view showing a state in which the roll is in a posture tilted by 45 ° in the present invention.

FIG. 6 is a plan view showing one usage example of the present invention.

FIG. 7 is an explanatory view of a rolling operation, showing a rolling state by a four-roll rolling mill.

FIG. 8 is a front view showing a rolling state by a two-roll rolling mill.

FIG. 9 is a front view showing a rolling state by a three-roll rolling mill.

FIG. 10 is a front view showing a rolling state by a four-roll rolling mill.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Traveling trolley 2; 4-roll rolling mill 3; Tilting mechanism 4; Tilting trolley 5; Roll 6; Worm 7; Pass line 15; roll changing device 16; roll turning device 17; standby portion 18; turner 19;

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidenori Kondo 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Pref. (72) Inside of Mizushima Works, Kawasaki Steel Corporation (72) Inventor Toshio Sakamoto Toshio Sakamoto, Mizushima-Kawasakidori, Kurashiki-shi, Okayama 1-chome (without address) Kawasaki Steel Corporation Mizushima Works (72) Inventor Eisuke Yamanaka 1-chome (without address) Mizushima Kawasaki-dori Kurashiki-shi, Okayama Prefecture Kawasaki Steel Corporation Mizushima Works (72) Inventor Country Norio Tada, No. 5-2, Sokai-cho, Niihama-shi, Ehime Prefecture Sumitomo Heavy Industries Machinery Co., Ltd., Niihama Works (72) Inventor Takeshi Takeshi, No. 5-2, Sokai-cho, Niihama-shi, Ehime Prefecture Sumitomo Heavy Industries Machinery Co., Ltd., Niihama Works ( 58) Field surveyed (Int.Cl. ⁶ , DB name) B21B 13/10 B21B 31/08 B21B 31/10 B21B 31/16

Claims (2)

(57) [Claims] A traveling vehicle (1) movable in a predetermined range;
A plurality of four-roll rolling mills (2) mounted in series on the traveling carriage (1) and the opposing rolls (5) of the adjacent four-roll rolling mill (2) are set in the same posture and at a relative angle of 45 °. A rolling mechanism (3) provided on the traveling carriage (1) to tilt one of the four-roll rolling mills (2) in order to obtain a tilted posture. The tilting mechanism (3) is mounted on a four-roll rolling mill (2) immovably, and has a worm gear (7) on its lower surface. And a rotating shaft (8) that is rotated by human power or power on the traveling cart (1),
The four-roll continuous rolling apparatus according to claim 1, further comprising a worm (6) screwed to the worm gear (7) of the tilting carriage (4).