JPS6124325Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rolled material guide device for a long steel rolling mill.

Conventionally, long bar rolling mills have been equipped with rolled material guide devices, but these types include a guide device attached to a rest bar fixed to a roll stand.
There are so-called fixed types and so-called separately placed types in which a guide device is attached to a separate mounting table.

However, since the guide tip is inside the window of the roll stand, when rearranging the roll unit, it is not possible to pull out the roll unit in the direction perpendicular to the pass line.

Therefore, in this case, it is necessary to remove the guide device each time, and especially in the former case, there is a disadvantage that centering must be performed when reinstalling, which is troublesome.

The present invention has been made in view of the above-mentioned drawbacks of the conventional rolling stock, and aims to provide a long steel rolling mill in which roll units can be changed quickly and easily, and centering of a guide device is not required.

Next, the present invention will be explained with reference to the drawings which are one embodiment.

1 is a roll stand, and a pair of upper and lower rolling roll units 3 are installed in this roll stand in a direction perpendicular to the pass line 2. A rolled material guide device 4 is provided at the rear of the roll unit. Note that 5 is an intermediate truss for guiding the rolled material from the guide device 4 to the next process.

6 is a rest bar of the guide device 4, which is located parallel to the longitudinal direction of the roll unit 3;
Guide members (rest rails) fixed to both inner wall surfaces of the roll stand 1 and extending rearward.
7,7 It is held loosely.

The rest bar 6, which is loosely fitted into the guide members 7, 7, is driven by hydraulic cylinders 8, 8, which are driving means attached to both sides of the roll stand 1.
It is adapted to be moved in the front-rear direction (path line direction) along the guide members 7, 7 as shown by the two-dot chain line. The bottom side of this hydraulic cylinder 8 is attached to the roll stand 1, and the rod side is attached to the lower surface of the rest bar 6. With this, the rest bar 6
Each guide tip of the rolled material guide 9 attached to the roll unit 3 is adapted to move forward and backward within a certain range with respect to the roll unit 3.

During rolling, as shown in the figure, a plurality of rolling material guides 9 are inserted into the rest bar 6 and fixed with bolts 10, and the hydraulic cylinders 8, 8 are driven to maintain the roll unit 3 in a predetermined positional relationship. Both ends are held by a push plate 12 attached to the rear surface of the roll stand 1 with bolts 11 to prevent the roll stand from being easily displaced due to vibration or the like. As a result, the tip end of each rolled material guide 9 is set to face each caliber position of the roll unit 3, and is fed into the guide hole 13 of the roll-formed rolled material.

Next, when rearranging the roll unit 3, remove the push plate 12, extend the hydraulic cylinders 8, 8, and retreat the rest bar 6 from the roll unit 3 to a predetermined position along the guide member 7. As a result, the tip of each rolled material guide 9 is retracted outward from the indicated line E, which is a position within the window of the roll stand 1 that does not interfere with the rolls, and the roll unit 3 is moved along the direction of arrow B. Just pull it out of the roll stand 1.

When the rearrangement work of the roll unit 3 is completed, the rest bar 6 is advanced in the same manner as described above, and the rolling work is resumed.

Furthermore, all piping for roll cooling water is attached to the rest bar 6, and the cooling water injection nozzle is moved forward and backward relative to the roll unit 3 in accordance with the forward and backward movement of the rest bar. In detail, each roll caliber 21 of the roll from the rolling equipment and the attached water supply equipment (not shown), that is, each cooling water supply hose 1 disposed at the tip of each guide.
Among the hoses 4 and 15, the tip of the upper water supply hose 14 is connected via the pipe 7 to an injection nozzle 18 bent in an arcuate shape along the roll, and sprays cooling water from a predetermined position relative to the position of the roll caliber 21. It's becoming like that. Incidentally, pillars 23, 23 are erected on both sides of the upper surface of the rest bar 6, and these pillars 2
A guide bar 22 is removably mounted between the guide bars 2 and 3, and the water supply hose 14 is fixed to a fitting 16 that is slidably attached to the guide bar 22.

Further, the tip of the lower water supply hose 15 is connected to an injection nozzle 20 via a pipe 19 also attached to the lower surface of the rest bar 6, so as to inject cooling water.

In this way, since the cooling water pipe is attached to the rest bar 6, as the guide device 4 moves forward and backward,
The cooling water pipes also move forward and backward together with this.

Note that the driving means is not limited to a hydraulic cylinder, and one end thereof is not necessarily connected to the roll stand 1.
It does not need to be fixed.

Moreover, the installation position of the rolled material guide is not limited to that of the embodiment, and may be provided on the entrance side of the roll stand or on both sides.

Since the present invention is constructed as described above, when recombining the roll unit, it is only necessary to evacuate the guide device without removing it, and furthermore, it is extremely easy to evacuate because it can be done simply by operating a hydraulic cylinder, etc. Therefore, compared to conventional fixed type or separately installed types, the reassembly time can be significantly shortened.

However, since the rest bar is attached to the roll stand and accurately centered with the roll caliber, there is no need for centering or other adjustments when moving the guide device forward or backward.

Furthermore, since the roll cooling water injection nozzle is attached to the rest bar, there is no need for complicated piping inside the roll stand as in the past, which not only reduces piping costs but also makes the roll stand easier to maintain. It also has the effect of becoming.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side sectional view of the exit guide device showing the position during rolling, and FIG.
The figure is a plan view of the same, and FIG. 3 is a front view of the same. DESCRIPTION OF SYMBOLS 1... Roll stand, 3... Roll unit, 4... Rolled material guide device, 6... Rest bar, 7... Guide member, 8... Hydraulic cylinder, 9...
...Rolled material guide, 14, 15... Cooling water supply hose, 16... Fixture, 18, 20... Injection nozzle, 22... Guide rod, 23... Support column.

Claims (1)

[Scope of utility model registration request] A guide member extending in the traveling direction of the rolled material is fixed inside the roll stand, a rest bar is provided that engages with the guide member and allows the rolled material guide to be placed movably, and the caliber of the lower roll is attached to the rest bar. A cooling water supply pipe is provided for supplying cooling water to the rest bar, and pillars are installed on both sides of the upper part of the rest bar, and a guide rod is removably mounted on the pillar. A rolled material guide device for a long steel rolling mill, characterized in that a cooling water supply nozzle for a caliber is slidably mounted thereon, and a drive means for moving the rest bar is connected to the rest bar.