JPH1128511A - Hot-rolling equipment for metallic band materials and method for hot-rolling metallic band material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely wind the tip of a band material around a down coiler without generating a flying phenomenon and waving phenomenon. SOLUTION: A band material restraining device 9 which is movable from the side of a finishing mill 2 to the side of the down coiler 4 while clamping the tip of the band material 3 and imparting tension to the band material 3 and stoppable on this side of the down coiler 4 is provided on a band material cooling line 5. This band material restraining device 9 is provided with the clamping device 13 for clamping the tip of the band material 3 and also which has an idea that the band material is passed through the inside of the device in the transporting direction. On the inlet side of the down coiler, an upper guiding device 10 for supporting the band material 3 from the upside and lower guiding device 11 for supporting the band material 3 from the underside are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot metal strip rolling equipment and a hot metal strip rolling method for winding a strip rolled by a finishing mill into a downcoiler, and more particularly, to a roller table type. Without causing the so-called flying phenomenon in which the tip of the strip rises upward or the waving phenomenon in which the strip undulates on the roller table, which is a problem when the strip is transported at high speed by the run-out table,
This ensures that the end of the strip is wound around the down coiler.

[0002]

2. Description of the Related Art Conventionally, in this type of hot rolling equipment, a strip rolled to a predetermined thickness by a finish rolling mill is connected to a finish rolling mill before being wound up on a mandrel of a down coiler. The strip is cooled to a predetermined winding temperature by a strip cooling line provided between the down coiler. This strip cooling line is composed of a run-out table composed of hundreds of driven roller tables and the like, and a strip cooling apparatus typified by a water spray type cooling apparatus or a water laminar type cooling apparatus. Then, the lower surface of the strip transported on the run-out table is cooled by cooling water injected from between the rollers of the run-out table, and the upper surface of the strip is cooled by cooling water injected from above the run-out table. It has become. In such hot rolling equipment, when the strip is transported at a high speed by a roller table type run-out table, a so-called flying phenomenon or waving phenomenon occurs, which may hinder the winding of the tip of the strip to a down coiler.

[0003] For this reason, various devices for solving the above-mentioned problems have been proposed. For example, as a first conventional example, in a strip transport device disclosed in Japanese Patent Application Laid-Open No. Sho 59-212113, a plurality of rollers for carrying a strip on which the strip is loaded are separated in parallel and continuously arranged rotatably. In the strip conveying device, a pair of left and right guides are arranged above and below the roller, respectively, and the upper pair of left and right guides and the lower pair of left and right guides are run along each pair of guides. A pair of upper and lower strip guide means for nipping and guiding the strip from above and below is provided.

A second conventional example is disclosed in Japanese Patent Laid-Open No.
In the threading guide device before the down-coiler disclosed in Japanese Patent Publication No. 17, the hot-run table provided on the lower side of the threading line before the down-coiler that winds the hot-rolled material cut at the output side of the finishing mill is provided. An air blow pipe is provided above the plate line to blow and guide gas to the hot-rolled material.

A third conventional example is disclosed in Japanese Patent Application Laid-Open No. 7-2047.
In the apparatus for suppressing the uplift of the strip at the time of conveyance disclosed in Japanese Patent Application Publication No. 23-203, a traveling device that travels at the same speed or almost the same speed as the transport speed of the leading end of the strip that is transported through the finishing mill, A strip leading end guide member which is supported by the apparatus and is provided above the strip upper surface to be conveyed and opposed to the upper surface of the strip to be conveyed and capable of suppressing the roll-up.

As a fourth conventional example, Japanese Patent Application Laid-Open No. Hei 8-1225
In the strip passing device disclosed in the above publication, a guide in which a chain, a wire, or a roller can run inside or near the bearing portion of the threading roll or roller of the process line or the bearing portion is provided. At the position where tension can be applied to the chain or wire or rope or the strip can be tensioned by snubber roll or wire or pinch roll descent,
A strip clamping device is connected to the chain or wire or rope, and an initial tension adjusting device and a constant tension control device for controlling the tension of the chain or wire or rope are provided. A sensor is provided at each of the position and the stop position, so that a series of threading operations is sequence-controlled.

A fifth conventional example is disclosed in Japanese Patent Laid-Open No. 6-1825.
In the method for manufacturing a metal thin film disclosed in Japanese Patent Publication No. 04, a molten metal is injected onto the surface of a cooling roll that rotates at high speed, cooled and solidified to form a metal ribbon, and then the ribbon is separated from the cooling roll, Next, the tip of the ribbon is captured by a pinch roll, the pinch roll is moved while applying tension to the ribbon, the tip of the ribbon is transported to a winding device, and the winding device winds the metal ribbon into a coil shape. A manufacturing method, wherein at least a part of a thin film guide section from a ribbon peeling point of a cooling roll to a pinch roll is formed by a pair of charged bodies which are charged at the same charge amount and positively and negatively, respectively. In the width direction of the thin film and applying electrostatic power in the width direction of the thin film passing through the guidance section to control the attitude of the thin ribbon.

[0008]

However, the above-mentioned conventional hot metal strip rolling equipment has the following problems. In the first conventional example, when the acceleration band and the deceleration band are designed in detail, the radius of rotation and the distance become finite, and the rolling band or the winding machine cannot be sufficiently approached.
When passing at high speed, there is a possibility that flying or waving may occur in the empty transport area before and after the transport device. In the second and third conventional examples, since the function of pulling the leading end of the strip is not provided, it is not possible to prevent the occurrence of a shape defect at the time of cooling, and it is necessary to control the roll advance rate skillfully. In the fourth conventional example, a large tension cannot be applied to the strip, and it is difficult to reduce the size and weight of the clamp device, and high-speed threading cannot be performed. In the fifth conventional example, since an electrostatic field is used as a non-contact holding force, it is difficult to apply the method to a strip having a thickness of 100 microns or more. In view of the above, the present invention has been proposed in view of the problems of the above-described conventional technology, and it is possible to reliably wind the leading end of a strip around a down coiler without causing a flying phenomenon or a waving phenomenon. It is an object of the present invention to provide a hot metal strip rolling method and a hot metal strip rolling facility.

[0009]

The present invention has the following means to achieve the above object. The invention according to claim 1 has a finishing mill, a down coiler for winding a strip rolled by the finishing mill, and a strip cooling line provided between the finishing mill and the down coiler. On the strip cooling line, the strip can be moved from the finishing mill side to the down coiler side while holding the tip of the strip while applying tension to the strip, and can be stopped in front of the down coiler. It consists of a hot metal strip rolling equipment equipped with a material restraining device. The band restraining device includes a holding device capable of holding a front end of the band, and has a structure through which the band can pass in the transport direction. On the entrance side of the downcoiler, an upper introduction device that is located above the strip cooling line and supports the strip from above, and / or is located below the strip cooling line, and the upper introduction device A lower introduction device is provided to support the strip from below, facing vertically.

The second aspect of the present invention is the first aspect of the present invention.
In the hot metal strip rolling equipment according to the invention described in the above, the strip restraining device is configured such that a rail contact force, a fluid force, an electromagnetic force, and a roll are applied from the front side and / or the back side of the strip passing therethrough. A guide device is provided that guides the strip in the transport direction while restraining the strip in the vertical direction by combining one or more of the contact forces.

The third aspect of the present invention is the first aspect of the present invention.
Alternatively, in the hot metal strip rolling equipment according to the invention as set forth in claim 2, the upper introduction device and / or the lower introduction device on the entrance side of the downcoiler are arranged from the front side and / or the back side of the passing strip. , Rail contact force, fluid force,
A guide device is provided that guides the strip in the transport direction while restraining the strip in the vertical direction by combining one or more of the electromagnetic force and the roll contact force.

The invention according to claim 4 is the above-described claim 1.
Using the hot metal strip rolling equipment according to the described invention, the strip rolled by the finishing mill is transported and cooled on the strip cooling line, and the cooled strip is wound around a down coiler. This is a method of rolling an intermetallic strip. This rolling method synchronizes the moving speed of the strip restraining device with the transport speed of the strip transported on the strip cooling line, and clamps the leading end of the strip by a clamping device; and By releasing the holding of the band, by reducing the moving speed of the band restraining device, without reducing the transport speed of the band, the tip of the band passes from the holding device through the band restraining device, Furthermore, an upper introduction device provided on the entrance side of the downcoiler and / or
Or while inserting into the lower introduction device, a step of stopping the band restraining device at a predetermined position before the down coiler, without slowing down the transport speed of the band,
And winding the leading end of the strip around the downcoiler via the upper introduction device and / or the lower introduction device and the guide pinch roll.

[0013] The invention according to claim 5 is the above-mentioned claim 4.
In the hot metal strip rolling method according to the described invention, in place of the hot metal strip rolling equipment according to the invention according to claim 1,
Using the hot metal strip rolling equipment according to the invention of claim 2, the strip rolled by the finishing mill is conveyed and cooled on a strip cooling line, and the cooled strip is sent to a down coiler. This is a hot metal strip rolling method for winding. In this rolling method, one or two of a rail contact force, a fluid force, an electromagnetic force, and a roll contact force are applied from the front side and / or the back side of the strip when the strip passes through the strip restraining device. In combination, the belt is guided in the transport direction while restraining the strip in the vertical direction.

The invention according to claim 6 is the above-described claim 4.
Alternatively, in the hot metal strip rolling method according to the fifth aspect of the present invention, the hot metal strip rolling equipment according to the first or second aspect of the invention is replaced with the hot metal strip rolling equipment according to the third aspect of the present invention. Using such a hot metal strip rolling equipment, a hot metal strip which rolls a strip rolled by a finishing mill on a strip cooling line and cools it, and winds the cooled strip into a down coiler. It is a rolling method. In this rolling method, when the strip passes through the upper introduction device and / or the lower introduction device on the entry side of the downcoiler, from the surface side of the strip and / or
Alternatively, one or two or more of a rail contact force, a fluid force, an electromagnetic force, and a roll contact force are combined from the back side to guide the strip in the transport direction while restraining the strip in the vertical direction.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. (Hot Metal Strip Rolling Equipment) FIG. 1 is an explanatory diagram illustrating a schematic configuration of a hot metal strip rolling equipment according to the present invention. As shown in FIG. 1, a hot metal strip rolling equipment 1 according to the present invention includes a finishing mill 2, a down coiler 4 for winding a strip 3 rolled by the finishing mill 2, and a finishing mill 2. And a band cooling line 5 provided between the down-coiler 4 and the down-coiler 4. A plurality of vertically opposed cooling pinch rolls 6 for sandwiching and transporting the strip 3 from above and below are provided on the strip cooling line 5, and the cooling pinch rolls 6 for sandwiching the strip 3 from above and below are cooled. A plurality of pairs of cooling pads 7 vertically opposed to each other are provided. The cooling pinch rolls 6 and the cooling pads 7 are alternately arranged in the transport direction of the strip 3 and are mounted so as to be movable in the vertical direction. However, the cooling means is not particularly limited to the above-described method, and is not limited to this as long as the equipment can be cooled.

A pair of left and right rails 8 are laid from the exit side of the finishing mill 2 to the side before the down coiler 4. A strip restraining device 9 for imparting tension is movably mounted between the finishing mill 2 and the side of the down coiler 4. The band restraining device 9 is stopped at a predetermined position before the down coiler 4 by a stopping device 18 installed before the down coiler 4 and / or a stopping device 19 (FIG. 2) installed inside the band restraining device 9. . This stopping device 1
The braking methods of 8, 19 are mechanical, frictional, electromagnetic,
A general braking system such as a hydrodynamic system may be used, and is not particularly limited. Further, the installation position of the stopping device 18 is not particularly limited.

Further, the band restraining device 9 has a structure through which the band 3 can pass in the longitudinal direction. As the band restraining device 9 is decelerated or stopped, the band moves the guiding device 2 inside the band restraining device 9 without reducing the transport speed.
0, a strip cooling line 5 for guiding the strip 3 to the down coiler 4, which is provided in front of the down coiler 4.
And / or a lower introduction device 11 that is located below the band cooling line 5 and that is vertically opposed to the upper introduction device 10 and supports the band 3 from below. And wound up by the down coiler 4 via the induction pinch roll 17.

The strip restraining device 9 is stopped until all the strips 3 are wound by the down coiler 4, and after the strips 3 have all passed, the track is moved from the cooling line 5 in the horizontal or vertical direction. It is moved to a position before the finishing mill 2 and is installed in the cooling line 5.

Next, several embodiments of the band restraining device 9, the upper introducing device 10 and the lower introducing device 11 will be described. (First embodiment of the strip restraining device) A first embodiment of the strip restraining device 9 used in the above-described hot metal strip rolling equipment 1 will be described with reference to FIG. FIG. 3 shows a hot metal strip rolling equipment 1
1 is a cross-sectional view showing a first embodiment of a band restraining device 9 used in the present invention. As shown in FIG. 3, the band restraining device 9 a according to the first embodiment includes a truck 12 running on a rail 8 (not shown).
And a band holding device 13 provided on a frame on the rear side of the cart 12. Note that the rear side of the trolley 12 refers to the rear side of the trolley 12 with respect to the transport direction of the strip 3 (the right side in FIG. 3).

The band restraining device 9a has a guiding device 20a for guiding the band 3 as a structure for passing the band 3 in the longitudinal direction in the device. This guidance device 20a
The material is not particularly limited, but in consideration of contact flaws, frictional resistance and wear due to contact between the strip 3 and the guide device 20a, a structural material such as ceramics is preferable. It is more preferable to apply a coating such as ceramics such as wear materials.

When the guiding device 20a has a rod-like shape extending in the direction of the plate passing, the number of guiding devices may be one or more. If there is a concern about the inclination of the band 3 in the width direction, it is desirable to use two or more rod-shaped guiding devices or a plate-shaped guiding device.

The above-described cart 12 is located below the frame.
It has two or more sets of wheels 16 for traveling on the rails 8 and can travel on the rails 8 by driving a drive device such as an air cylinder device or a motor (not shown).

The above-described band material holding device 13 is composed of a pair of upper and lower holding pinch rolls 14 and 14 which are stretched between left and right frames of the carriage 12, and is vertically driven by a driving device such as an air cylinder device (not shown). Each of the pinch rolls 1 can be moved to approach or separate from each other, and each pinch roll 1
4, 14 can be rotated in opposite directions. Then, by rotating the pinch rolls 14, 14 close to each other, the pinch rolls 1
Take the tip of the strip 3 between 4 and 14 and pinch it,
The end of the band 3 can be taken out from between the pinching rolls 14 to release the pinching.

(Second embodiment of band restraining device) Next, FIG.
Based on the above, a second embodiment of the strip restraining device 9 used in the above-described hot metal strip rolling equipment 1 will be described. FIG. 4 is a cross-sectional view showing a second embodiment of the strip restraining device 9 used in the hot metal strip rolling equipment 1. As shown in FIG. 4, the band restraining device 9b according to the second embodiment differs from the band restraining device 9a according to the first embodiment only in the structure of the guiding device 20b. Therefore, members having the same functions as those of the band material restraining device 9a according to the first embodiment described above are denoted by the same reference numerals, or the description thereof will be omitted, and the structure of the guiding device 20b will be described in detail. explain.

The guiding device 20b in the band restraining device 9b is provided with a fluid jet opening 21 for generating a fluid jet so as to apply a force to the front and back surfaces of the band 3 and the band restraining device 9b. When the band 3 passes through the inside of the band constraining device 9b due to the deceleration or stoppage of the band, the ejecting fluid force is applied to the band 3 so that the band 3 and the guiding device 20b hardly come into contact with each other. Is smoothly guided inside the band material restraining device 9b. The number, shape, and arrangement of the fluid ejection openings 21 that generate the fluid ejection flow are not particularly limited as long as the fluid force can be applied to the strip 3.

(Third embodiment of the band restraining device) Next, FIG.
Based on the above, a third embodiment of the strip restraining device 9 used in the above-described hot metal strip rolling equipment 1 will be described. FIG. 5 is a cross-sectional view showing a third embodiment of the strip restraining device 9 used in the hot metal strip rolling equipment 1. As shown in FIG. 5, the band restraining device 9c according to the third embodiment differs from the band restraining device 9a according to the first embodiment only in the structure of the guiding device 20c. Therefore, members having the same functions as those of the band material restraining device 9a according to the first embodiment described above are denoted by the same reference numerals, or the description thereof will be omitted, and the structure of the guiding device 20c will be described in detail. explain.

The guiding device 20c in the band restraining device 9c is provided with an electromagnetic force generating portion 22 for generating an electromagnetic force so as to apply a force to the front and back surfaces of the band 3 and the guiding device 20c of the band restraining device 9c. The band 3 is moved by the band restraining device 9c with deceleration or stop.
When the electromagnetic force is applied to the band 3 when passing through the inside of the band 3, the band 3 and the guiding device 20c hardly come into contact with each other, and the band 3 is smoothly guided inside the band restraining device 9c. The number, shape, and arrangement of the electromagnetic force generating portions 22 are not particularly limited as long as the electromagnetic force can be applied to the band 3.

(Fourth embodiment of band restraining device) Next, FIG.
A fourth embodiment of the strip restraining device 9 used in the above-described hot metal strip rolling equipment 1 will be described based on FIG. FIG. 6 is a sectional view showing a fourth embodiment of the strip restraining device 9 used in the hot metal strip rolling equipment 1. As shown in FIG. 6, the band restraining device 9d according to the fourth embodiment differs from the band restraining device 9a according to the first embodiment only in the structure of the guiding device 20d. Accordingly, members having the same functions as those of the band material restraining device 9a according to the first embodiment described above are denoted by the same reference numerals, or the description thereof will be omitted, and the structure of the guiding device 20d will be described in detail. explain. Strip restraint device 9
Roller table 23 is provided as a means for guiding the band in d, so as to apply a force to the front and back surfaces of the band 3, and the band 3 is moved in accordance with the speed reduction or the stop of the band restraining device 9d. When the roller table 23 is pressed against the strip 3 when passing through the inside of the strip 9d, no slip resistance is applied to the strip 3, and the strip 3 is smoothly guided inside the strip restraining device 9d.

(First Embodiment of Upper Introducing Device and Lower Introducing Device) Next, based on FIG. 7, the upper introducing device 10 on the entry side of the downcoiler used in the above hot metal strip rolling equipment 1 will be described.
And a first embodiment of the lower introduction device 11 will be described. FIG.
1A and 1B show a first embodiment of an upper introducing device 10 and a lower introducing device 11 used in a hot metal strip rolling equipment 1, wherein FIG. 1A is a sectional view and FIG. The band material restraining device 9 is controlled by a stop device 18 and / or 19 (not shown) so as to stop near or partially overlap the upper introduction device 10a and the lower introduction device 11a.

When the band restraining device 9, the upper introducing device 10a, and the lower introducing device 11a overlap and stop,
Interference between the devices can be avoided by adopting a structure in which the distal end portion of the band material restraining device 9 and the upper introducing device 10a and the lower introducing device 11a are wrapped in a shape that fits each other in the width direction or the height direction. In addition, it is possible to smoothly transfer the band material 3 without flying and waving.

The upper introducing device 10a and the lower introducing device 1
The material of 1a is not particularly limited.
Considering contact flaws, frictional resistance, and wear due to contact between the upper introduction device 10a and the lower introduction device 11a, a structural material such as a ceramic is preferable, and a coating such as a ceramic such as an abrasion-resistant material is applied on the structural member. More preferred. Here, as the form of the guidance device 20,
The first embodiment of the band restraining device is described and described.
Of course, any of the second to fourth embodiments may be used.

(Second Embodiment of Upper Introducing Device and Lower Introducing Device) Next, referring to FIG. 8, a second embodiment of the upper introducing device 10 and the lower introducing device 11 used in the above hot metal strip rolling equipment 1 will be described. An embodiment will be described. FIG. 8 is a second view of the upper introducing device 10 and the lower introducing device 11 used in the hot metal strip rolling equipment 1.
It is sectional drawing which showed the Example. As shown in FIG. 8, the second embodiment differs from the first and second embodiments in only the presence or absence of a guiding device as compared with the upper introduction device 10a and the lower introduction device 11a. Therefore, members having the same functions as those of the above-described first embodiment will be denoted by the same reference numerals, description thereof will be omitted, and the guidance device will be described in detail.

Upper introduction device 10b, lower introduction device 11b
Is provided with a guide device comprising a fluid ejection opening 24 for generating a fluid ejection flow so as to apply a force to the front and back surfaces of the strip 3. As the band restraining device 9 is decelerated or stopped,
When the band material 3 is guided from the band material restraining device 9 to the upper introduction device 10b and the lower introduction device 11b, by applying a jetting fluid force to the band material 3, the band material 3 and the upper introduction device 10b,
It becomes difficult to contact the lower introduction device 11b, and the strip 3 is smoothly delivered from the guiding device 20 in the strip restraining device 9.

(Third Embodiment of Upper Introducing Device and Lower Introducing Device) Next, referring to FIG. 9, a third example of the upper introducing device 10 and the lower introducing device 11 used in the above-described hot metal strip rolling equipment 1 will be described. An embodiment will be described. FIG. 9 is a third view of the upper introducing device 10 and the lower introducing device 11 used in the hot metal strip rolling equipment 1.
It is sectional drawing which showed the Example. As shown in FIG. 9, the third embodiment differs from the upper introduction device 10a and the lower introduction device 11a according to the first embodiment only in the presence or absence of a guiding device. Therefore, members having the same functions as those of the above-described first embodiment will be denoted by the same reference numerals, description thereof will be omitted, and the guidance device will be described in detail.

Upper introduction device 10c, lower introduction device 11c
Is provided with an induction device including an electromagnetic force generating unit 25 that generates an electromagnetic force so as to apply a force to the front and back surfaces of the strip 3. As the band restraining device 9 is decelerated or stopped, the band 3
Is applied from the band restraining device 9 to the upper introducing device 10c and the lower introducing device 11c, and by applying an electromagnetic force to the band 3, the band 3, the upper introducing device 10c, and the lower introducing device 11c Is difficult to contact, and the band 3 is
It is smoothly delivered from the guidance device 20 inside.

(Fourth Embodiment of Upper Introducing Device and Lower Introducing Device) Next, based on FIG. 10, an upper introducing device 10 and a lower introducing device 11 used in the hot metal strip rolling equipment 1 described above.
A fourth embodiment will be described. FIG. 10 is a sectional view showing a fourth embodiment of the upper introducing device 10 and the lower introducing device 11 used in the hot metal strip rolling equipment 1. The fourth embodiment is shown in FIG.
0, the upper introduction device 10 according to the first embodiment
a, Only the presence or absence of a guidance device is different from the lower introduction device 11a. Therefore, members having the same functions as those in the first embodiment are denoted by the same reference numerals and described.
Alternatively, the description will be omitted, and the guidance device will be described in detail. The upper introduction device 10d and the lower introduction device 11d are provided with a guiding device composed of a roller table 26 so as to apply a force to the front and back surfaces of the strip 3, and the strip is restrained as the strip restraining device 9 is decelerated or stopped. When the belt 3 is guided from the band restraining device 9, the belt 3 comes into contact with the roller 26, so that no slip resistance is applied to the band 3, and the band 3 is guided in the band restraining device 9. It is smoothly delivered from the device 20.

[0037]

Since the present invention has the above-described structure, the following effects can be obtained. According to the first or fourth aspect of the present invention, since the upper and lower surfaces of the strip are regulated from above and below and guided to the downcoiler on the line for transporting the strip, the strip is always guided from above and below. Thus, it is possible to avoid flying and waving phenomena that occur when the band is transferred from the band conveyer to the downcoiler on the line that conveys the band, and the band can be conveyed at high speed. Moreover, since the opening mechanism and operation of the strip are simplified, highly reliable equipment and operation can be realized.

According to the second or fifth aspect of the present invention, since the guiding device is provided in the band restraining device,
In addition to the above effects, the strip is less likely to come into contact with the inner wall of the strip restraining device, is guided smoothly, and can be transported at a high speed.

According to the third or sixth aspect of the present invention, since the guiding device is provided in the upper introduction device and the lower introduction device on the entrance side of the downcoiler, in addition to the above-described effects, the strip material is It becomes difficult to come into contact with the inner walls of the upper introduction device and the lower introduction device, is guided smoothly, and furthermore, it becomes possible to convey the strip at a high speed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a schematic configuration of a hot metal strip rolling facility according to the present invention.

FIG. 2 is an explanatory view illustrating an example of a stop mechanism of a strip restraining device used in a hot metal strip rolling facility according to the present invention.

FIG. 3 is a view showing a first embodiment of a strip restraining apparatus used in a hot metal strip rolling facility according to the present invention.

FIG. 4 is a view showing a second embodiment of a strip restraining device used in a hot metal strip rolling facility according to the present invention.

FIG. 5 is a view showing a third embodiment of a strip restraining apparatus used in a hot metal strip rolling facility according to the present invention.

FIG. 6 is a view showing a fourth embodiment of a strip restraining apparatus used in a hot metal strip rolling facility according to the present invention.

FIG. 7 is a first view of an upper introduction device and a lower introduction device on the entrance side of the downcoiler used in the hot metal strip rolling equipment according to the present invention.
It is the figure which showed the Example, (a) is the sectional drawing, (b)
Is the plan view

FIG. 8 is a diagram illustrating a second example of the upper introduction device and the lower introduction device on the entrance side of the downcoiler used in the hot metal strip rolling equipment according to the present invention.
It is a figure showing an example.

FIG. 9 is a third view of the upper and lower introduction devices on the entrance side of the downcoiler used in the hot metal strip rolling equipment according to the present invention.
It is a figure showing an example.

FIG. 10 is a view showing a fourth embodiment of an upper introduction device and a lower introduction device on the entrance side of a downcoiler used in the hot metal strip rolling equipment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot metal strip rolling equipment 2 Finish rolling mill 3 (Metal) strip 4 Downcoiler 5 Strip cooling line 6 Cooling pinch roll 7 Cooling pad 8 Rail 9, 9a-d Strip restraint device 10, 10a-d Top introduction Apparatus 11, 11a-d Lower introduction device 12 Truck 13 Strip holding device 14 Holding pinch roll 16 Wheel 17 Guide pinch roll 18 Stop device 19 Stop device 20, 20a-d Guide device 21 Fluid ejection opening 22 Electromagnetic force generating unit 23 Roller table 24 Fluid ejection opening 25 Electromagnetic force generator 26 Roller table

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Takeshi Higo 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division

Claims (6)

[Claims] 1. A finishing mill, a down coiler for winding a metal strip (hereinafter, also simply referred to as a strip) rolled by the finishing mill, and a down roller provided between the finishing mill and the down coiler. A strip cooling line, the strip coil cooling line being movable from the finishing mill side to the down coiler side while holding the tip of the strip and applying tension to the strip, and the down coiler A hot metal strip rolling equipment provided with a strip restraining device that can be stopped in front of the strip material, wherein the strip restraining apparatus includes a clamping device capable of clamping a tip of the strip, and the inside of the strip material is a strip. Has a structure that can pass in the transport direction, and on the entry side of the downcoiler, an upper introduction device that is located above the strip cooling line and supports the strip from above, and / or the strip cooling line Located below the above Introducing device and hot metal strip rolling equipment characterized by having a lower introduction device for supporting the opposite to strip vertically from the lower side. 2. The belt restraining device according to claim 1, wherein at least one of a rail contact force, a fluid force, an electromagnetic force, and a roll contact force is applied from a front side and / or a back side of the band passing through the inside. The hot metal strip rolling equipment according to claim 1, further comprising a guide device that guides the strip in the transport direction while restraining the strip in the vertical direction. 3. An upper introduction device and / or a lower introduction device on the entrance side of the downcoiler, wherein a rail contact force, fluid force,
3. The guide device according to claim 1, further comprising: a guiding device that guides the strip in the transport direction while restraining the strip in the vertical direction by combining one or more of the electromagnetic force and the roll contact force. 4. Hot metal strip rolling equipment. 4. A hot metal strip rolling method wherein a strip rolled by a finishing mill is conveyed on a strip cooling line to be cooled, and the cooled strip is wound around a downcoiler. On the strip cooling line, a strip restraining device that can move from the finishing mill side to the down coiler side while holding the tip of the strip and applying tension to the strip, and can be stopped in front of the down coiler. The band restraining device includes a clamping device capable of clamping a tip of the band, and has a structure in which the band can pass in the transport direction inside the band restraining device. An upper introduction device positioned above the strip cooling line and supporting the strip from above, and / or a lower portion positioned below the strip cooling line and vertically facing the upper introduction device; Equipped with a lower introduction device supported from the side Using a rolling equipment, synchronizing the moving speed of the strip restraining device with the transport speed of the strip transported on the strip cooling line, and clamping the leading end of the strip by a clamping device; and the clamping device. By releasing the pinching of the strip by, and reducing the moving speed of the strip restraining device, the tip of the strip passes through the strip restraining device from the pinching device without reducing the transport speed of the strip. A step of inserting into the upper introduction device and / or the lower introduction device provided on the entrance side of the down coiler and stopping the band restraining device at a predetermined position before the down coiler; Winding the tip of the strip around the downcoiler via the upper and / or lower introduction device and the induction pinch roll without decelerating the hot metal strip pressure. Method. 5. A guide device is provided in said band restraining device, and one of a rail contact force, a fluid force, an electromagnetic force, and a roll contact force is viewed from the front side and / or the back side of the band passing through the inside. The hot metal strip rolling method according to claim 4, wherein the strip is guided in the transport direction while restraining the strip in the vertical direction by combining one or two or more. 6. A guide device is provided in an upper introducing device and / or a lower introducing device on the entrance side of the downcoiler, and a rail contact force and a flow from the front side and / or the back side of the strip passing therethrough. Physical strength, electromagnetic force, roll contact force 1
The hot metal strip rolling method according to claim 4 or 5, wherein the strip is guided in the transport direction while restraining the strip in the vertical direction by combining two or more of the strips.