JPH0741289B2 - Rolling mill - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a universal rolling mill capable of rolling various types of rolled products, and more particularly to a rolling mill provided with a cartridge-type inner housing.

[Conventional technology]

As the rolling mill in the H-section steel rolling equipment, upper and lower horizontal rolls and left-right vertical rolls are installed in the operating side and drive side housings through their respective chocks, and various types of H-section steel rolls of various widths can be rolled horizontally and vertically. Universal rolling mills are known that can be operated at the same time.

Conventionally, this universal rolling mill has been equipped with a vertical roll chuck vertically fixed to a housing. For this reason, it is not possible to adjust the height of the vertical roll according to the size of the product to be rolled. , But always tried to match the center of the fixed vertical roll.

According to this method, the vertically movable table has to be arranged in front of and behind the rolling mill, resulting in a high equipment cost and many movable parts, which causes a problem in maintenance. To solve this problem, as disclosed in Japanese Examined Patent Publication No. 46-10654, an inner housing made into a cartridge type is provided in the housing of the rolling mill, and a horizontal vertical roll chuck is supported by this card carriage, and this cartridge cartridge is supported. A proposal has been made to adjust the height by moving it up and down.

[Problems to be solved by the invention]

However, according to this proposal, the height of the cartridge is adjusted by inserting a shim between the sled that supports the cartridge and the cartridge. No consideration is given to the adjustment of the distance between these rolls.

That is, when the upper and lower horizontal rolls are worn and replaced, the distance between the shaft centers of the upper and lower rolls is shorter than that before the wear, and the spindle holding device holds the spindle at this short distance. Then, after removing the worn upper / lower horizontal rolls, the new upper / lower horizontal rolls are installed, but the new upper / lower horizontal rolls are worn out.
Since the distance between the axes is longer than that of the lower horizontal roll,
It is necessary to move the holding position of the spindle holding device in the vertical direction and accurately position the holding height according to the lengthened space. Therefore, the moving mechanism that moves the holding height in the vertical direction needs to have high positioning accuracy, which causes a problem that the equipment cost increases. In addition, the structure is complicated, which is disadvantageous in terms of maintenance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rolling mill that does not need to move the holding height of a spindle holding device when an old roll is removed and a new roll is attached, and rolls can be easily reassembled.

[Means for solving problems]

In order to achieve the above-mentioned object, according to the present invention, a pair of upper and lower horizontal rolls and a pair of left and right vertical rolls, and a top mounted on a thread to rotatably support the horizontal rolls.
In a rolling mill having a lower horizontal roll chock and a left / right vertical roll chock that rotatably supports the vertical rolls, the upper / lower horizontal roll chock and the left / right vertical rolls are provided inside the housing of the rolling mill so as to be vertically movable. A first spacer rod having an inner housing for accommodating a roll chock, height adjusting means provided between the housing lower portion and the sled, and a portion for supporting the lower surface of the sled, and the first spacer rod. A second spacer rod located above and supporting the lower horizontal roll chock, and a third spacer rod located above the second spacer rod and supporting the lower surface of the left / right vertical roll chock and the lower surface of the upper horizontal roll chock. It has a spacer rod and separates the upper and lower horizontal rolls from each other in the vertical direction. In which a support capable of supporting means is provided at a height.

[Action]

According to the above configuration, at the time of rolling, the height of the upper / lower horizontal rolls and the left / right vertical rolls is adjusted by the height adjusting means provided between the thread and the lower part of the housing to match the height of the rolled material. Can be made. Further, when changing the rolls, the lower surface of the thread is lifted and supported by the first spacer rod of the supporting means, and the lower horizontal roll chock is lifted and supported by the second spacer rod on the first spacer rod. The third spacer rod on the upper side lifts and supports the left / right vertical roll chock and the upper horizontal roll chock, and at this time, the inner housing in which these chock are housed and movable up and down is also lifted at the same time, so that lifting of these chock cannot be prevented. Then, due to such a function of the supporting means, the upper and lower horizontal rolls, which are worn and have a narrow interval, are vertically separated from each other, and the axial centers of these rolls are supported at a wide interval before the abrasion. It And, since the spindle holding device holds the spindle at this wide axial distance, when the worn upper and lower horizontal rolls are removed and new upper and lower horizontal rolls are installed, the spindle holding device is held. There is no need to move the height again and adjust the holding interval. Therefore, it is possible to easily change the rolls.

〔Example〕

An embodiment of a rolling mill according to the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention. In FIG. 1, a sled 2 is provided in the lower part of a housing 1, and a pair of cart ledges 3 are mounted on the sled 2 so as to be vertically movable along the inside of the housing 1. A vertical roll chuck 4 shown in FIG. 2 is provided at an intermediate portion in the height direction of the cartridge 3 and an upper horizontal chuck 5 and a lower horizontal chuck 6 are slidably held at upper and lower portions thereof, respectively. A vertical roll 7, an upper horizontal roll 8 and a lower horizontal roll 9 are rotatably supported on the vertical roll chock 4, the upper horizontal chock 5 and the lower horizontal chock 6, respectively. Spindles 10 and 11 for driving the upper horizontal roll 8 and the lower horizontal roll 9 are provided on the rolling mill drive side, respectively.

FIG. 3 shows a cross section taken along the line AA of FIG. 2, in which a height adjusting liner 12 is placed between the sled 2 and the lower upper surface of the housing 1. On the other hand, a pair of vertically movable rails 13 are provided on both sides of the lower part of the housing 1.
A spacer rod 14 slidably penetrating the inside of the sled 2 is mounted on the upper side thereof, and can come into contact with the lower surface of the sled 2 via a collar portion 14a. Spacer rods 15 and 16 are sequentially connected to the upper end of the spacer rod 14. The spacer rod 15 is the lower horizontal chuck 6 described above.
And the spacer rod 16 can be engaged with the lower surfaces of the vertical roll chuck 4 and the upper horizontal chuck 5, respectively.

Next, the operation and effect of this embodiment will be described. At the time of rolling, the height of the vertical roll chock 4, the upper horizontal chock 5 and the lower horizontal chock 6 is adjusted as shown in FIG.
Adjusting through the thread 2 and the cartridge 3 by changing the thickness of the vertical roll 7, the upper horizontal roll 8
The position of the lower horizontal roll 9 in the height direction is determined according to the center of the thickness direction of the rolled material (not shown). At the time of roll rearrangement, as shown in FIG. 4, the rail 13 is raised, and the lower surface of the thread 2 is lifted and supported by the collar portion 14a of the spacer rod 14, and the spacer rod positioned on the spacer rod 14 is supported.
The lower horizontal chock 6 is lifted and supported by 15 and the vertical roll chock 4 and the upper horizontal chock 5 are lifted and supported by the spacer rod 16 located on the spacer rod 15. At this time, the spacer rod 16 also lifts the cartridge 3 at the same time via the vertical roll chock 4 so that the lifting of these chocks 4, 5 and 6 is not hindered. Due to the action of the rail 13 and the spacer rods 14, 15 and 16 as described above, the upper and lower horizontal rolls 8 and 9 which are worn and have a narrow interval are separated from each other in the vertical direction, and the axial centers of these rolls are separated. Are supported at wide intervals before wear. And
Since the spindle holding device (not shown) holds the spindles 10 and 11 at this wide axial distance from the operating side (left side in FIG. 2), the worn upper and lower horizontal rolls 8 and 9 were removed. When new upper and lower horizontal rolls 8 and 9 are attached later, there is no need to move the holding height of the spindle holding device again and adjust the holding interval. Therefore, the rolls can be easily recombined.

In this embodiment, the case where the height adjusting means provided between the lower part of the housing and the sled 2 is the height adjusting liner 12 has been described, but this means may be another means such as a wedge or a hydraulic cylinder. Good.

〔The invention's effect〕

As described above, according to the present invention, the inner housing supporting the roll chock is provided in the housing of the universal rolling mill so as to be movable up and down, and the inner housing is mounted on the sled whose height is adjustable, and the upper and lower parts are mounted. Since the horizontal rolls are separated from each other in the vertical direction and provided with supporting means capable of supporting each at a predetermined height, the rolls can be easily recombined with a simple spindle holding device.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a rolling mill according to the present invention, FIG. 2 is a partial sectional side view of FIG. 1, FIG. 3 and FIG.
The figure is a cross-sectional view taken along the line AA in FIG. 1 ... Housing, 2 ... Thread, 3 ... Cartridge (inner housing), 4 ... Vertical roll chuck,
5 …… Upper horizontal check, 6 …… Lower horizontal check, 7 ……
Vertical roll, 8 ... upper horizontal roll, 9 ... lower horizontal roll, 12 ... height adjustment liner, 13 ... rail.

Claims (1)

[Claims] 1. A pair of upper and lower horizontal rolls and a pair of left and right vertical rolls, an upper / lower horizontal roll chock mounted on a sled for rotatably supporting the horizontal roll, and a left / right rotatably supporting the vertical roll. In a rolling mill having a right vertical roll chock, an inner housing that is vertically movably provided inside the housing of the rolling mill and that houses the upper / lower horizontal roll chock and the left / right vertical roll chock, the housing lower portion and the thread. And a first spacer rod having a portion for supporting the lower surface of the sled, and a second spacer positioned on the first spacer rod and supporting the lower horizontal roll chock. The rod and the left spacer located on this second spacer rod
A support means having a third spacer rod for supporting the lower surface of the right vertical roll chock and the lower surface of the upper horizontal roll chock, and capable of vertically separating the upper and lower horizontal rolls from each other and supporting each at a predetermined height; A rolling mill characterized by being provided with.