JP3097326B2 - Horizontal rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal rolling mill in which only upper and lower work rolls are crossed. The present invention enables an existing facility to be easily changed to a cross mill and a thrust force generated by a roll cross by a simple mechanism. It is something that can be received stably.

[0002]

2. Description of the Related Art One of the methods for controlling the cross-sectional shape of a rolled product with high accuracy is to change the distribution of the clearance between the rolls by slightly crossing the upper and lower work rolls in a horizontal plane with respect to a direction perpendicular to the plate advancing. Practical as a so-called cross mill.

In order to realize this cross mill, a roll cross mechanism is required. For example, as shown in FIG. 3, a cross mechanism 2 of one work roll 1 is shown before and after a plate moving direction L of a housing 3. Warm jack 4
The pusher bar 5 reciprocated by the worm jack 4 is reciprocated along a guide hole 6 formed in the housing 3, and the pusher bar 5 is brought into contact with the chock liner 8 on the side surface of the roll chock 7 so that the work roll 1 is moved. A slight crossing is made in the horizontal plane with respect to the direction perpendicular to the plate traveling direction L.

When a cross mill having such a cross mechanism 2 is configured as, for example, a four-high rolling mill, only the upper and lower work rolls are crossed, and the upper and lower holding rolls supporting the work rolls are not crossed but are left as they are. When rolled in the state, a thrust force is generated between the work roll and the rolled material and between the work roll and the hold-down roll, and the thrust force generated between the work roll and the rolled material causes the rolled material to change. It is almost offset between the upper and lower work rolls,
Although the value itself becomes small, a large thrust force remains between the work roll and the waiting roll.

Therefore, in the conventional cross mill, in order to eliminate the generation of thrust force between the upper and lower work rolls and the upper and lower holding rolls supporting the same, the upper and lower holding rolls are set so as to be parallel to the rotation axis of the work roll. It has been put into practical use as a pair cross mill that crosses at the same angle.

[0006] As a thrust receiving mechanism for receiving a thrust force generated by the work roll or the hold-down roll, as shown for one work roll in FIG. A wheel 9 having a rotation axis parallel to the plate traveling direction L is mounted via a rolling bearing, and the wheel 9 is rolled between a side surface of the housing 3 and a chock clamp plate 11 movable by a chock clamp cylinder 10. By doing so, the thrust force is supported, and the work roll 1 is moved up and down via the wheels 9 so that the thickness control (AGC) can be smoothly performed.

[0007]

However, in the above-mentioned cross mechanism 2 for realizing a cross mill, the housing 3
It is necessary to form the guide hole 6 of the pusher bar 6 at the same time, and it becomes complicated and large-scale. In particular, it is difficult to modify the existing horizontal rolling mill to a method of crossing the work rolls in terms of the production of the mechanism and the operation stop period. There is a problem that is very difficult.

Further, in the thrust receiving mechanism which receives the thrust force generated by the roll cloth, the thrust force can be supported by the wheel 9 and the housing 3 or the choke clamp plate 11. As a result, the entire wheel 9 does not come into line contact with the housing 3 or the chock clamp plate 11, and only a part of the wheel 9 comes into point contact, so that there is a problem that the thrust force cannot be stably supported.

The present invention has been made in view of the above-mentioned problems of the prior art, and has been developed in consideration of a problem that occurs when a roll cloth is used.
It is an object of the present invention to provide a horizontal rolling mill capable of stably supporting the last force .

Further, the present invention provides a stable support for thrust force.
In addition, the cross angle must be set accurately with a simple mechanism.
And can be easily applied to existing rolling mills.
It is an object of the present invention to provide a horizontal rolling mill capable of producing the same.

[0011]

In order to solve the problems of the prior art, a horizontal rolling mill according to the present invention is directed to a horizontal rolling mill in which only upper and lower work rolls are crossed in a horizontal plane with respect to a direction perpendicular to the plate advance. Both upper and lower work rolls
At least one end of a roll chock supporting the end
Is always supported in parallel with the direction of board movement
A thrust receiving block that protrudes is provided.
A wheel that rolls along both sides of the lock and receives thrust force
Is provided on a support block attached to the housing .

A horizontal rolling mill according to the present invention is characterized in that :
In addition to the configuration described above,
With a cross cylinder built in
The crossing is made possible by contacting the ring.

[0013]

SUMMARY OF According to the horizontal rolling mill, the work roll crossing mill to cross only the upper and lower work rolls, upper and lower word
Less roll chocks to support both ends of the crawl
And one end is supported by a parallelogram link and is always on the plate
Provide a thrust receiving block that protrudes in parallel with the line direction.
Rolling along both sides of the thrust receiving block
Support wheels attached to the housing
A lock is provided to receive the thrust force.
Always keep the thrust receiving block even when crossing
Be parallel to the direction of travel, and thrust in a stable state.
To support the force.

According to this horizontal rolling mill, a work roll cross mill for crossing only upper and lower work rolls is provided.
With the cross cylinder, roll the roll at both ends of the work roll.
Built in one of the chocks and
It is designed to come into contact with the housing and a hole in the housing
Eliminates the need for processing, etc.
The loss angle can be set.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 and 2 show an embodiment of a horizontal rolling mill according to the present invention. FIG. 1 is a schematic horizontal sectional view showing only an upper work roll, and FIG. 2 is a schematic perspective view of a roll arrangement.

The horizontal rolling mill 20 is composed of a four-stage rolling mill and includes upper and lower work rolls 21 and 22 and upper and lower rolls 23 and 24. Only the upper and lower work rolls 21 and 22 that are in contact with the rolled plate W are provided. Is configured as a work roll cross mill capable of roll crossing.

The upper and lower work rolls 21 and 22 include:
The same cross mechanism is provided for each of them. Here, the cross mechanism 25 of the upper work roll 21 shown in FIG. 1 will be described as an example.

In this cross mechanism 25, a cross cylinder 28 is formed on the side of the upper work roll chock 26, on which both ends of the upper work roll 21 are supported, facing the housing 27, in the front and rear directions in the plate advancing direction L. ,
The distal ends of the rods 29 connected to the pistons abut against the inner surface of the window of the housing 27, and the amount of extrusion by the rods 29 is adjusted by supplying and discharging working fluid from a working fluid supply device (not shown). The rotation axis of the work roll 21 can be slightly crossed with respect to the direction perpendicular to the plate advancing direction L.

In the horizontal rolling mill 20, the cross mechanism 25
The cross cylinder 28 constituting the roll chock 26
Since the housing 27 is built in the side, there is no need to perform any processing on the housing 27, only the processing on the roll chock 26 side is required, and the manufacture of the cross mechanism 25 is facilitated, and the existing rolling mill is converted into a cross mill. In this case, it can be easily dealt with by modifying only the roll chocks.

Therefore, according to the horizontal rolling mill 20, the structure is simple, and the cross angle can be set with high accuracy by the expansion and contraction of the rod 29. Ability increases.

Next, the thrust receiving mechanism of the horizontal rolling mill 20 will be described with reference to the case of the upper work roll shown in FIG.

The thrust receiving mechanism 3 of the horizontal rolling mill 20
Reference numeral 0 denotes one of the upper work roll chocks 26 provided to support both ends of the upper work roll 21 (the lower roll chock in FIG. 1) 2.
6 is equipped.

Brackets 31 are provided integrally or separately at four positions in front and rear and up and down of the plate traveling direction L on the outer side of the upper work roll chock 26 in a direction perpendicular to the plate traveling direction L,
Each of these four brackets 31 has a first
The links 32 are connected by pins, and second links 33 having a length equal to the interval between the brackets 31 in the plate traveling direction L are vertically arranged at the distal ends of the upper and lower first links 32 and connected by pins. Upper and lower two parallelogram links are formed. A pin 34 is attached to each of the central portions of the upper and lower first links 32, and a plate-shaped thrust receiving block 35 projects forward and backward in the plate traveling direction L and is supported vertically.

On the other hand, these two thrust receiving blocks 3
In order to support the thrust force by sandwiching both sides of 5,
A guide groove 36 is formed on the outside of the housing 27 horizontally along the plate advancing direction L, and a support block 37 is slidably mounted on the housing 27 so as to be reciprocated by a support cylinder 38 mounted on the housing 27. .

In the support block 37, wheels 39 are mounted on both sides at intervals slightly wider than the thickness of the thrust receiving block 35, with rotating shafts arranged in parallel with the plate traveling direction L.

Therefore, the support block 37 is moved forward by the support cylinder 38 and the thrust receiving block 35 is moved.
By arranging the wheels 39 so as to sandwich both sides of the roller, the thrust force generated by the roll cloth can be supported by the wheels 39 via the thrust receiving block 35.

Even when the cross angle of the work roll 21 is changed, since the thrust receiving block 35 is attached via the pin 34 to the first link 32 constituting the parallelogram link, the plate traveling direction L is always constant. The thrust receiving block 35 can be kept parallel to the
And can receive a thrust force in a stable state.

Further, according to the horizontal rolling mill 20, the structure of the thrust receiving mechanism 30 is simplified.

In each of the above embodiments, the horizontal rolling mill is
Although the description has been given of the case where the rolling mill is constituted by a high rolling mill, it may be constituted by a 6-high rolling mill or the like.

The present invention is not limited to the above-described embodiment, but may be modified in each component without departing from the scope of the present invention.

[0031]

As described above, according to the horizontal rolling mill of the present invention, a work roll cross mill for crossing only upper and lower work rolls is provided.
Roll chock supporting both ends of upper and lower work rolls
At least one end is supported by a parallelogram link
A thrust receiving block protruding parallel to the plate travel direction.
And rolling along both sides of this thrust receiving block
A support that attaches the wheel that receives the last force to the housing
On the heat block to receive the thrust force.
So, even if you cross the work roll, the thrust receiving block
Can be always parallel to the direction of board movement, stable state
Can support the thrust force with the structure
Be simple.

According to the horizontal rolling mill, a work roll cross mill for crossing only upper and lower work rolls is provided.
With the cross cylinder, roll the roll at both ends of the work roll.
Built in one of the chocks and
As it comes into contact with the housing, a hole in the housing
Eliminates the need for processing, etc.
The loss angle can be set. Thereby, the sheet crown control ability can be improved as compared with the conventional pair cross mill.

[Brief description of the drawings]

FIG. 1 is a schematic horizontal sectional view showing only an upper work roll according to an embodiment of the horizontal rolling mill of the present invention.

FIG. 2 is a schematic perspective view of a roll arrangement according to one embodiment of the horizontal rolling mill of the present invention.

FIG. 3 is a plan view of a conventional roll cloth mechanism and a thrust receiving mechanism.

[Explanation of symbols]

 Reference Signs List 20 horizontal rolling mill 21, 22 upper and lower work rolls 23, 24 up and down rolls 25 cross mechanism 26 upper work roll chock 27 housing 28 crossing cylinder 29 rod 30 thrust receiving mechanism 31 bracket 32 first link 33 second link 34 pin 35 thrust receiving Block 36 Guide groove 37 Support block 38 Support cylinder 39 Wheel L Plate traveling direction W Rolled plate

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-279305 (JP, A) JP-A-52-88564 (JP, A) JP-A-58-38601 (JP, A) JP-A-4- 91807 (JP, A) JP-A-4-162904 (JP, A) JP-A-62-34612 (JP, A) JP-A-5-277529 (JP, A) JP-A-5-293519 (JP, A) JP-A-5-317933 (JP, A) JP-A-5-337524 (JP, A) JP-A-6-15320 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 13/14 B21B 31/02 B21B 31/16

Claims (2)

(57) [Claims] 1. A horizontal rolling mill in which only upper and lower work rolls are crossed in a horizontal plane with respect to a direction perpendicular to the plate advance.
Roll chocks that support both ends of the upper and lower work rolls
To a parallelogram link at least at one end
Thrust receiving block that always projects parallel to the direction of board travel
And rolling along both sides of this thrust receiving block
The wheel that receives the thrust force is attached to the housing
A horizontal rolling mill provided on a support block . 2. A roll chock for said upper and lower work rolls.
With a built-in cross cylinder and a rod end in the housing
Claims characterized in that it is possible to cross by contacting the
The horizontal rolling mill according to 1 .