JPH079018A - Water breaking device of rolling mill - Google Patents

Abstract

PURPOSE:To prevent the coolant water sneaked in the outlet side of upper/lower work rolls from adhering to a plate stock. CONSTITUTION:A partition wall 12 is placed in corresponding to a roll gap opening part GO at the outlet side of upper/lower work rolls 3, 4. The partition wall 12 is structured so that plural flow guide plates 10 are placed in the pass line direction L and are slanted toward outside. A coolant water 5 passed through the roll gap opening part GO is distributed to inside/outside with the partition wall 12, discharging the outside coolant water 5 as is. The inside coolant water 5 is diverted to the partition wall 12 side by the air from an air spray nozzle 17, to be discharged along the flow guide plate 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a draining device for removing coolant water that is jet-supplied to a roll of a rolling mill and passes through an opening of a roll gap to an outlet side of the rolling mill.

[0002]

2. Description of the Related Art For example, in a rolling mill for rolling aluminum plate material, as shown in FIGS. 2A and 2B, upper and lower work rolls 3, 4 backed up by upper and lower backup rolls 1, 2. At the inlet side of, the coolant water (rolling oil based on water) 5 is jetted and supplied to the rolling part and the surface part of the upper and lower work rolls 3 and 4 by the nozzle 6 to lubricate the rolling part and cool the roll. I am trying. Reference numeral 7 indicates a plate material, and 8 indicates a housing.

However, the coolant water sprayed from the nozzle 6 is used as the upper and lower work rolls 3 without the plate material 7.
From the roll gap opening portion G0 between the four, it goes around to the exit side of the upper and lower work rolls 3, 4 and adheres to the width end of the plate material 7, and further, after hitting the housing 8, it rebounds and adheres onto the plate material 7. There's a problem.

Therefore, in FIG. 2B, as shown by the chain double-dashed line, a suction duct 9 is provided on the exit side of the upper and lower work rolls 3 and 4 so as to be movable in the plate width direction and at the width end of the plate member 7. A draining device of a system in which the suction ports 9a are arranged close to each other and the coolant water 5 having passed through the roll gap opening portion G0 is sucked by the suction duct 9 is adopted.

[0005]

However, in the above-described water draining device, the coolant water 5 directly passing through the roll gap opening portion GO cannot be completely sucked unless the suction force of the suction duct 9 is considerably strengthened. In reality, it is impossible to prevent the coolant water 5 from adhering to the width end of the plate member 7.

In the case of the rolling machine for rolling the plate 7 made of aluminum, if water adheres to the surface of the plate 7, it causes white rust called water stain, so that a draining device having a high draining effect is used. Is requested.

Therefore, the present invention intends to provide a draining device for a rolling mill which can effectively remove the coolant water passing from the roll gap opening portion to the outlet side to prevent the coolant water from adhering to the plate material. It is a thing.

[0008]

In order to solve the above problems, the present invention provides a plate on the outlet side of the upper and lower work rolls in a rolling mill in which coolant water is jetted and supplied from the inlet side to the upper and lower work rolls. Partition walls formed by arranging a plurality of flow guide plates obliquely outward from the upstream side to the downstream side in the pass line direction at both positions in the width direction correspond to the roll gap opening portions of the upper and lower work rolls. As described above, an air injection nozzle for ejecting air for facing the partition wall side so that the coolant water that has entered the inside of the partition wall is directed toward the partition wall side Installed so that it can be displaced on the side.

Further, it is preferable that a bounce prevention member for absorbing a collision force of the coolant water is attached to an inner surface of each of the flow guide plates of the partition wall.

[0010]

The coolant water that has passed through the opening of the roll gap is distributed to the inside and outside of the partition wall due to the presence of the partition wall, and the coolant water guided to the outside is removed as it is. On the other hand, the coolant water guided inward is diverted to the partition wall side by the air from the air injection nozzle, and is discharged along the inclination of each flow guide plate.

If a bounce prevention member is attached to the inner surface of the flow guide plate, even if the coolant water collides, the collision force is absorbed to prevent the bounce back to the plate material side. .

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B show an embodiment of the present invention, and are supported by the upper and lower backup rolls 1 and 2 as in the case of FIGS. 2A and 2B. In the rolling mill in which the coolant water 5 is jetted and supplied from the inlet side of the upper and lower work rolls 3, 4 to the surfaces of the upper and lower work rolls 3, 4 by the nozzle 6, , A plurality of flow guide plates 10 arranged in a louver shape at appropriate intervals so as to incline toward the downstream outer side in the direction of the pass line L, and a connecting member 11 for connecting between the upper ends and the lower ends of the respective flow guide plates 10. The partition wall 12 made of
To face the width ends of the partition wall 12 so as to face each other in the plate width direction so as to correspond to both width end portions of the partition wall 12. Also, a fixing block 13 is provided below the partition walls 12 and one end of the motor is provided between the fixing blocks 13. Reverse screw 14 connected to 15
The partition walls 12 are brought close to and separated from each other in the width direction of the plate by rotating the reverse screw 14 by driving the motor 15 and the partition walls 12 are brought close to the width end of the plate member 7. By arranging the coolant, the coolant water 5 that has passed through the roll gap opening portion GO is separated from the partition wall 12.
So that the outer coolant water 5 can be directly removed.

Further, at the upper and lower positions on the outlet side of the upper and lower work rolls 3 and 4, the air 16 is jetted to the coolant water 5 guided to the inside of the partition wall 12 to turn it toward the partition wall 12 side. The jet nozzles 17 are displaceably provided so as to correspond to the width dimension of the plate material 7, and each of the air jet nozzles 1
The air 16 jetted from 7 diverts the coolant water 5 that has entered the inside of the partition wall 12 to the partition wall 12 side and follows the inclination of the flow guide plate 10 to the outside from between the flow guide plates 10. To be discharged.

Further, the air 16 of the air injection nozzle 17 is used.
In order to prevent the rebound of the coolant water 5 which has been deflected by the collision with the partition wall 12, the wire mesh 18 is provided on the inner surface of each of the flow guide plates 10 of the partition wall 12 as a rebound preventing member.
So that the impact of the coolant water 5 can be absorbed by the wire net 18.

When the rolling mill is operated, the reverse-screw screw 14 is rotated by driving the motor 15 in advance to set the position of the partition wall 12 close to the width end face of the plate 7 to be rolled.

In this state, when the rolling mill is operated and the coolant water 5 is supplied from the nozzle 6 toward the work rolls 3 and 4, the partition is provided on the outlet side of the work rolls 3 and 4. Since the wall 12 is provided, the coolant water 5 that has passed through the roll gap opening portion G0 is distributed to the outside (opposite side of the plate material) and the inside (side of the plate material) of the partition wall 12 and is guided to the outside of the partition wall 12. The splashed coolant water 5 is indicated by an arrow 5a, and will be removed as it is.

On the other hand, the coolant water 5 guided to the inside of the partition wall 12 adheres to the width end of the plate material 7 as it advances, so the air injection nozzle 17 arranged on the outlet side of the work rolls 3 and 4. Air 16 is jetted obliquely toward the width end of the plate material 7 so that the coolant water 5 that has entered the inside of the partition wall 12 is redirected to the outside. At this time, each of the flow guide plates 10 forming the partition wall 12
Is inclined outward toward the downstream side in the direction of the pass line L, so that the coolant water 5 deflected by the air 16 of the air injection nozzle 17 flows to each of the flow guide plates 10 as shown by an arrow 5b. It will be discharged to the outside from between the flow guide plates 10 along the slope.

Further, when the coolant water 5 passing through the inside of the partition wall 12 is deflected to the outside by the spray of the air 16 and runs along the flow guide plate 10, it collides with the flow guide plate 10 and a part thereof. However, in the present invention, since the metal net 18 is attached to the inner surface of each of the flow guiding plates 10 as a bounce preventing member in the present invention, even if the coolant water 5 is inside the flow guiding plate 10, Even if it collides with the side surface, the collision force is absorbed by the wire netting 18 so that it does not bounce onto and adhere to the plate member 7. In addition, wire mesh 1
The coolant water 5 absorbed by 8 drops downward. In addition, even if the coolant water 5 guided to the outside of the partition wall 12 collides with the housing or the inner surface of the axle box and bounces off and scatters toward the plate material 7 side, a slight wrap (overlap) is provided between the flow guide plates 10. , Does not adhere to the plate material 7 beyond the partition wall 12.

As described above, in the present invention, the coolant water 5 that has passed through the roll gap opening portion GO is distributed to the inside and outside of the partition wall 12, and the coolant water 5 on the outside is distributed.
Since the partition wall 12 directly removes the coolant water 5 and the air 16 from the air injection nozzle 17 discharges the coolant water 5 along the inclination of the flow guide plate 10 of the partition wall 12, the conventional air suction duct. The amount of the coolant water 5 to be treated in the vicinity of the width end portion of the plate member 7 can be reduced as compared with the case of using, and the draining effect can be increased. Incidentally, regarding the position setting of the partition wall 12, the coolant water 5 to the inside of the partition wall 12 is closer to the width end surface of the plate material 7.
Although it is advantageous that the amount of entry of the plate material 7 can be reduced, the position is set at an interval that does not contact the plate material 7 in consideration of the case where the plate material 7 meanders for some reason.

In the above embodiment, the case where the wire net 18 is attached to the inner surface of the flow guide plate 10 which constitutes the partition wall 12 as a member for preventing the splashing of the coolant water 5 is illustrated, but the invention is not limited to the wire net 18. Needless to say, felt or sponge may be used, and various changes may be made without departing from the scope of the invention.

[0022]

As described above, according to the water draining device of the rolling mill of the present invention, the partition wall formed by arranging a plurality of flow guide plates in an inclined arrangement corresponds to the roll gap opening portion on the exit side of the upper and lower work rolls. The coolant water that has passed through the roll gap opening part can be distributed to the inside and the outside with the partition wall as a boundary, so that the coolant water guided to the outside can be directly removed and the coolant water guided to the inside can be removed. Since the air jetted from the air jet nozzle redirects the air to the partition wall side so that it can be discharged along the inclination of each flow guide plate, a high draining effect is obtained and the coolant water to the plate material is obtained. Adhesion can be effectively prevented, and splashing of the coolant water from the flow guide plate can be ensured by attaching a bounce prevention member to the inner surface of each flow guide plate that constitutes the partition wall. And can be suppressed, it is possible to further enhance the effect of preventing adhesion coolant water to the plate, there is exhibited an excellent effect that.

[Brief description of drawings]

FIG. 1 shows an outline of an embodiment of a water draining device for a rolling mill according to the present invention, in which (a) is a cut side view and (b) is a central plan view of (a).

FIG. 2 shows an example of a rolling mill, in which (a) is a schematic front view and (b) is a schematic side view.

[Explanation of symbols]

 3 Upper work roll 4 Lower work roll 5 Coolant water 10 Flow plate 12 Partition wall 16 Air 17 Air injection nozzle 18 Wire mesh (Rebound prevention member) L Pass line GO Roll gap opening part

Claims (2)

[Claims] 1. A plurality of flow guide plates are arranged in the pass line direction at positions on both sides in the plate width direction on the outlet side of the upper and lower work rolls in a rolling mill in which coolant water is jetted and supplied to the upper and lower work rolls. The partition walls, which are arranged obliquely outward from the upstream side to the downstream side, are arranged so as to be positionally adjustable in the plate width direction so as to correspond to the roll gap opening portions of the upper and lower work rolls, and the partition walls Rolling, characterized in that an air injection nozzle for injecting air for diverting the coolant water entering the inside of the wall to the partition wall side is displaceably installed on the outlet side of the upper and lower work rolls. Machine drainer. 2. The water removing device for a rolling mill according to claim 1, wherein a bounce preventing member for absorbing a collision force of the coolant water is attached to an inner surface of each of the flow guide plates of the partition wall.