JPH03258402A - Edger roll device - Google Patents

Abstract

PURPOSE:To ensure the total volume of mixed fluid by injecting the mixed fluid of water and air from a nozzle to the impeller of an edger roll and controlling the mixture rate of the mixed fluid in accordance with the required rotational speed and cooling quantity of the edger roll. CONSTITUTION:The impeller 15 for rotationally driving is provided on the edger roll 11. The mixed fluid 17 of water and air for driving and cooling is injected from the nozzle 16 to the impeller 15. Using a control means 18, the mixture rate of the mixed fluid 17 to the nozzle 16 is controlled in accordance with the required rotational speed and required cooling quantity of the edger roll 11. Guide groove with which splashed water into an enclosure on the back of the edger roll due to the rotation of roll is led to the surface of the edger roll is formed. In this way, roll cooling can be efficiently executed.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an improvement of an edge roll device provided to improve edge drop of rolled material. The mixed fluid for driving and cooling can be injected according to the supply rate and required cooling amount.

[Prior Art] One of the methods for improving edge drop of a rolled material is to perform width reduction using an edger roll.

This storage device includes an edger roll device, and a pair of edger rolls, for example, are installed on both sides of the rolled material in the width direction.

In this edger roll device, if the rolled material is bitten while the edger roll is in a stopped state, the contact area between the edger roll surface and the rolled material suddenly changes from a static friction state to a dynamic friction state, which applies a large impact to the roll surface and causes contact scratches. will occur.

Therefore, a water wheel is attached to the edger roll, and water is injected from a nozzle to preliminarily rotate the edger roll, so that water within the driving diameter of the edger roll is used for cooling the roll.

When using such an edger roll device to reduce the width of a rolled material, if the rolled material is thick, the water after driving the edger roll can be used to cool the roll, and even if the rolled material is splashed with water, the rolled material will not be affected. Since the retained heat was large, there was no problem in width reduction.

[Problems to be Solved by the Invention] However, recently there has been an increasing demand for improved precision in rolled products, and even for thin rolled materials that conventionally did not undergo width reduction using an edge roll, It is considered that the accuracy of plate thickness can be improved by improving edge drop.

However, as the rolled material becomes thinner, the supply speed of the rolled material becomes faster and the amount of cooling of the rolls becomes smaller. increases proportionally, and the rolled material becomes too cold, resulting in a problem that sufficient width reduction cannot be achieved.

Additionally, if water is injected into the water wheel to match the amount of cooling required for the rolled material, the rotational speed of the edge roll will be slow, resulting in large slippage between the roll surface and the rolled material, resulting in contact scratches on the roll. There are contradictory issues.

Furthermore, if the rotational speed of the edger roll increases, there is a problem in that the water after driving the water wheel will scatter due to centrifugal force, making it impossible to cool the roll.

This invention was made in view of the problems of the prior art, and includes an impeller that prevents wear of the edge roll provided to improve the edge drop of the rolled material. It is an object of the present invention to provide an edger roll device that can inject a mixed fluid for driving and cooling in accordance with the supply rate and the required amount of cooling.

[Means for Solving the Problems] In order to solve the problems of the above-mentioned prior art, the edger roll device of the present invention includes an edger roll provided with an impeller for rotational driving, and a driving and cooling impeller directed toward the impeller. A nozzle for injecting a mixed fluid of water and air is provided, and a control means is provided for controlling the mixing ratio of the mixed fluid to this nozzle in accordance with the required rotational speed and required cooling amount of the edger roll. .

Furthermore, the edger roll device of the present invention is characterized in that a guide groove is formed in the enclosure at the back of the edger roll to guide water blown away by roll rotation to the edger roll surface.

[Function] According to this edger roll device, a mixed fluid of water and air is injected from a nozzle to the impeller for rotationally driving the edger roll, and this mixed fluid is controlled by a control means, so that the rolled material is If the thickness becomes thinner and it is necessary to increase the rotational speed of the edger roll and reduce the amount of cooling, add water according to the required amount of cooling to maintain the required rotational speed of the roll. The total amount of mixed fluid is ensured by mixing air.

Therefore, the rotational speed of the edger roll can be increased and at the same time the amount of cooling can be reduced, and edge drop caused by the edger roll apparatus can be effectively improved even in thin rolled materials.

Further, a guide groove is formed in the enclosure at the back of the edger roll, so that water blown away by the centrifugal force caused by rotation of the roll can be guided to the roll surface, and the roll can be cooled efficiently.

[Example 1] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of an embodiment of an edger roll apparatus of the present invention.

This edger roll device [0] is equipped with a pair of edger rolls 1 which are constituted by vertical rolls arranged on both sides of the rolled material S in the width direction. In order to support these edger rolls 1, both ends of the vertical support shaft 4 are fixedly supported by support plates 13 provided above and below the roll frame 12, and the edger roll 11 is rotatable via bearings on this support shaft 14. is supported by

Although not shown in the drawings, the back of these roll frames 12 is provided with a drive mechanism such as a hydraulic cylinder to set the width of the rolled material S, as well as a position sensor, a load cell, etc. The detected values of the position and load are recorded on the control panel, and these are controlled to predetermined values.

Further, an impeller 15 is integrally attached to the upper part of each of these rollers 11, and water W is supplied from a nozzle 6 attached to the support plate 3 on the upper part of the roll frame 12.
Alternatively, by injecting a mixed fluid 17 of water W and air A, the impeller]-5 is rotated, and the edger roll 11 is rotationally driven.

These nozzles] 6 are provided with a control means 18, as shown by a dashed line in FIG. 1, in order to supply water W1 or a mixed fluid 17 of water W and air A at a predetermined mixing ratio. .

This control means 18 is configured such that pressurized water W supplied from a pressurized water supply source (not shown) is sent to a mixed fluid supply pipe 20 via a large capacity control valve 19, and pressurized water W is sent via a pressure reducing valve 21 and a small capacity control valve 22. The mixed fluid is then sent to the mixed fluid supply pipe 20.

Further, pressurized air A supplied from a pressurized air supply source (not shown) is connected to the mixed fluid supply pipe 20 via a pressure reducing valve 23 and an air control valve 24, and further via a check valve 25, and is connected to the water W and air. Mixed fluid A] 7 can be supplied to the nozzle 16.

In the edge roll device 10 configured as described above, when the thickness of the rolled material S becomes thinner, the control means]8 controls the water W out of the mixed fluid 17 supplied to the nozzle coil 6 through the pressure reducing valve 2.
1 and small capacity control valve 22, and after driving the impeller 15,
Set the amount of water required for cooling 1.

On the other hand, the rotational speed of the edger roll 1 has to be increased because the thickness of the rolled material S has become thinner. is ensured by mixing air A.

The mixed fluid 17 obtained by mixing water W and air A in this manner is sent to the nozzle 16 via the mixed fluid supply pipe 20 to the impeller 15.
Spray toward. Note that the pressures of water W and air A may be adjusted so that both are uniformly mixed; for example, the pressures may be the same, or the pressures of water W or air A may be made slightly higher.

Then, the impeller 15 is driven, and the gear roll 11 integrated with it is rotated, but the mixed fluid 17
Since the impeller 15 is driven as a whole, it can rotate at the rotational speed required according to the thickness of the rolled material S, and the water W itself in the mixed fluid 17 supplied to the nozzle 16 is Therefore, by cooling the edge roll with water W after driving, the edge roller]
1 and the rolled material S are prevented from becoming supercooled.

By using the mixed fluid 17 of water W and air A in this manner, it is possible to both ensure the rotational speed of the edger roll 1 and prevent overcooling, which were previously difficult to achieve.

In addition, the structure can be simplified without requiring two lines of piping for water W and air A, and it can be easily installed on the movable part of the roll frame 12.

As a result, edge drop can be improved even if the rolled material S is thin.

Note that when the thickness of the rolled material S, which has conventionally been subjected to width reduction by an edger roll device, is thick, the control means 18
The pressurized water W may be supplied directly to the mixed fluid supply pipe 20 via the large capacity control valve 19, the edger roll 11 should be set at the required rotational speed, and the All you have to do is cool it down with water.

Next, another embodiment of the edger roll device of the present invention will be explained with reference to FIG. 2, or the explanation of the same parts as in FIG. 1 will be omitted.

In this edger roll device 30, the edger roll 11
By increasing the rotational speed of the roller, the water W is prevented from scattering and the edger roll 1 can be effectively cooled.

This edger roll device 30 has an edger roll 11.
A semicircular enclosure 31 is integrally formed on the roll frame 12 which is the back part of the roll frame 12, and a guide groove 32 is formed in the enclosure 31 to guide water W blown away by the rotation of the roll to the roll surface.

Two guide grooves 32 are formed, and as shown in FIG. It is formed almost perpendicularly from the middle part on the downstream side in the direction to the two sides of the position where the rolled material S contacts.

Note that other configurations are the same as the edge roll device 1 described above.
Since it is the same as 0, the explanation will be omitted.

According to such an edger roll device 30, even when the water W in the mixed fluid 16 injected to the impeller 15 as the edger roll 1 rotates is scattered due to centrifugal force, the water W does not hit the enclosure 31. This water W flows along the guide groove 32 on the upstream side in the rotational direction of the edger roll 1,
It is hung on the roll surface again and further rolled] 1
Similarly, the water W splashed below the middle part of the roll hits the enclosure 31 and is applied to the roll surface along the lower guide groove 32.

Therefore, the water W after driving the edger roll 11 can be used more effectively for cooling the roll.

As a result, edge drop can be improved even if the rolled material S is thin.

Although the above embodiment has been described in the case of an edger roll device equipped with one pair of edger rolls, the present invention is not limited to this, and can be similarly applied to a case with a plurality of pairs of edger rolls.

Further, the control means for supplying the mixed fluid is not limited to the configuration shown in the illustrated example, and may be any device that can control the flow rate and/or pressure.

Furthermore, the Etsuyar roll was made into an idler roll,
It is not limited to this.

Furthermore, it goes without saying that each component may be modified without departing from the gist of the invention.

[Effects of the Invention] As described above in detail with the embodiments, according to the edger roll device of the present invention, a mixed fluid of water and air is injected from the nozzle to the impeller for rotationally driving the edger roll, and the mixed fluid is Since the fluid is controlled by a control means, when the thickness of the rolled material becomes thinner and it is necessary to increase the rotational speed of the edger roll and reduce the amount of cooling, it is possible to adjust the flow rate according to the required amount of cooling. The total amount of mixed fluid can be ensured by mixing water with air necessary to maintain the required rotational speed of the rolls.

Therefore, the rotational speed of the edger roll can be increased and at the same time the amount of cooling can be reduced, and edge drop caused by the edger roll apparatus can be effectively improved even in thin rolled materials.

In addition, since the impeller is driven and the edge roll is cooled using a mixed fluid, the structure can be simplified, eliminating the need for two lines of piping for water W and air A, and it is easy to use for moving parts such as the roll frame. It can be installed in

Furthermore, since a guide groove is formed in the enclosure at the back of the edge roll, water blown away by centrifugal force due to roll rotation can be guided to the roll surface.
Roll cooling can be performed efficiently.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of an edger roll apparatus of the present invention. FIG. 2 shows another embodiment of the edger roll device of the present invention, including a perspective view and a plan view of an enclosure portion;
It is an explanatory diagram of the flow of water. 10: Edger roll device, 1] Edger roll, 1
2: Roll frame, 13: Support plate, 14: Support shaft, 1
5: impeller, 16 nozzle, ] 7: mixed fluid, ] 8: control means, 19 two large capacity control valves, 20: mixed fluid supply pipe,
2: pressure reducing valve; 22: small capacity control valve; 23. Pressure reducing valve, 24
: Air control valve, 25: Check valve, 30・Edge roll device, 31: Enclosure, 3
2: Guide groove, A: Air, W: Water.

Claims (2)

[Claims] (1) An impeller for rotational driving is provided on the edger roll, a nozzle is provided to inject a mixed fluid of water and air for driving and cooling toward the impeller, and the mixing ratio of the mixed fluid to this nozzle is adjusted to the edger roll. An edger roll device characterized in that it is provided with a control means for controlling according to the required rotational speed and required cooling amount of the edger roll. (2) The edger roll device according to claim 1, wherein a guide groove is formed in the enclosure at the back of the edger roll to guide water blown away by roll rotation to the edger roll surface.