JP5743145B2 - Roll changing apparatus and roll changing method for metal strip processing apparatus - Google Patents

Description

The present invention relates to a roll changing apparatus and a roll changing method such as a brush roll and a ringer roll arranged in a cleaning container of a strip cleaning apparatus for cleaning a metal strip surface, for example.

  Since the surface of the cold-rolled steel strip has foreign matter such as oil and fat such as rolling oil, metal powder, or dust, these foreign matter should be treated before continuous annealing or galvanizing. The surface of the strip is passed through a strip cleaning device for cleaning (Reference 1).

In the cited document 1, the strip is wetted with deposits such as oil and iron powder on the surface by the alkaline solution sprayed from the spray header in the alkaline cleaning tank, and the alkaline solution penetrates into the interface between the strip and the deposit. To loosen the adhesion. Further, the oil on the strip surface and the alkali solution are sufficiently saponified by stirring with a brush roll. After the alkaline solution on the surface is squeezed out with a ringer roll, the alkali-washed strip is rinsed with hot water sprayed from the spray header and brush roll in a hot water coarse washing tank, and then washed with high pressure hot water. The residue of dirt is removed by the water pressure of the pressurized high-pressure hot water sprayed from the spray nozzle in the tank.

In the conventional strip cleaning apparatus, a lower roll replacement rail and an upper roll replacement rail are provided in the cleaning container in order to replace the lower roll and the upper roll of the brush roll or ringer roll in the cleaning container (references). 2).

In the example of the conventional metal strip cleaning apparatus shown in FIG. 8, the horizontal ringer roll or brush roll disposed in the cleaning container 1 a is composed of a lower roll 4 and an upper roll 5. The shafts at both ends of the lower roll 4 protruding outward from the opening / closing door 1b of the cleaning container 1a are rotatably supported by the chock 6, and the shafts at both ends of the upper roll 5 are rotatably supported by the chock 7. .

The lower roll replacement rail 23 and the upper roll replacement rail 24 are fixed to the upper frames 10 and 13 on the gate frames straddling the upper portions of the upper and lower rolls 4 and 5 and inside the cleaning container 1a in the roll axis direction. Yes.

A wheel 11 is attached to the lower surface of each chock 6 that pivotally supports both ends of the lower roll 4, and this wheel 11 is placed on a lower roll replacement rail 23 arranged across the inside of the cleaning tank when the roll is replaced. The lower roll 4 with the chock 6 is supported by the lower roll replacement rail 23.

A wheel (not shown) is attached to the upper part of each chock 7 that pivotally supports both ends of the upper roll 5, and this wheel is placed on the upper surface of the upper roll replacement rail 24 arranged across the inside of the cleaning tank. The upper roll 5 with the chock 7 is suspended and supported so as to be movable on the upper roll replacement rail 24. A wheel 13 is also attached to the lower surface of the chock 7, and this wheel 13 is transferred onto the rail 25 of the roll exchanging carriage when the roll is exchanged.

In the above configuration, since the roll is worn when used for a long period of time, it must be periodically replaced with a new one. The replacement procedure will be described.

In order to replace the lower roll 4, the lower roll 4 remains attached to the chock 6 and is moved on the lower roll exchanging rail 23 arranged inside the cleaning container 1a by the wheels 11 attached to the chock 6. . Since the lower roll replacement rail 23 is connected to the rail 25 on the roll replacement carriage waiting on the side of the strip cleaning device, the lower roll 4 is moved from the lower roll replacement rail 23 to the rail 25 on the roll replacement carriage. It is taken out by changing.

After the taken-out lower roll 4 is carried out from the roll exchange carriage with a crane, a new lower roll with a roll chock is carried in, placed on the rail 25 on the roll exchange carriage, moved toward the cleaning container 1a, and the lower roll By being transferred onto the replacement rail 23, it is pushed into the cleaning container 1a and replaced.

Also for the upper roll 5, the upper roll 5 was moved from the upper roll replacement rail 24 to the rail 25 on the roll replacement carriage by the same procedure as the replacement of the lower roll 4, and was carried into the roll replacement carriage. A new upper roll is transferred from the roll exchange carriage to the upper roll exchange rail 24 and exchanged. At the time of exchanging the upper roll, the rail on the roll exchanging carriage is raised to the upper roll exchanging rail level.

Japanese Utility Model Publication No. 8-296603 JP 2004-298904 A

  However, in the conventional metal strip processing apparatus, since the lower roll replacement rail and the upper roll replacement rail are arranged inside the cleaning container, the surface of the roll replacement rail becomes rough due to corrosion and the roll replacement is smooth. There was a problem of being unable to.

Moreover, since there is a connecting portion between the rail of the roll exchanging carriage and the roll exchanging rail inside the cleaning container, there is a problem that the roll cannot be exchanged smoothly due to a gap or a step in the connecting portion.

  Accordingly, the present invention provides a roll exchanging apparatus and roll exchanging method for a metal strip processing apparatus capable of exchanging rolls without providing a roll exchanging rail inside the processing container in the processing apparatus for metal strip. It is.

In the invention of claim 1 of the present application, a roll is provided inside the processing container vertically through both walls of the processing container, and a chock that pivotally supports both sides of the roll is provided outside the both walls of the processing container. A roll exchanging device for a metal strip processing device that supports the chock so that it can be moved up and down by a lifting and lowering device that integrally lifts and lowers the roll and the chock, and an upper surface is disposed on the lower side of the lifting and lowering device on one side An inclined rail having a downwardly inclined surface is provided on the outer side of the upper and lower sides of the lifting means on the other side, and an inclined rail having an upwardly inclined surface on the center side of the processing container is provided on the lower side of the lifting means. A suspension / movement wheel is provided on the inclined rail, and a movement wheel is provided at the lower part of the chock. A roll exchanging carriage on which a telescopic rail that can be inserted from the outside of the processing container is mounted on the lower side of the moving wheel of the chock that is moved up and down integrally with the metal strip processing device is disposed adjacent to the processing device for the metal strip. It is the roll change apparatus of the processing apparatus of the metal strip characterized by the above-mentioned.

The invention according to claim 2 of the present application is provided with an opening / closing door through which both ends of the telescopic rails can penetrate the both wall surfaces of the processing container, and the telescopic rails outside the both wall surfaces of the processing container. 2. A roll exchanging apparatus for a metal strip processing apparatus according to claim 1, wherein a fixing base to which each is fixed is provided.

Invention of Claim 3 of this application is a roll change method of the metal strip processing apparatus characterized by comprising the following steps 1 to 8 by the roll change apparatus of the metal strip processing apparatus of Claim 1 or 2. is there. Step 1: A space in which the roll and the chock to be exchanged by the elevating means are integrally raised and lowered, and the telescopic rail can be inserted from the outside of the processing container to the lower side of the moving wheel of the chock. Form. Step 2:
A telescopic rail is extended and inserted from the outside of the processing container into the space formed below the moving wheel and is handed over. Step 3: The moving wheel is placed on the telescopic rail provided. Step 4: The roll and the chock are integrally moved on the telescopic rail by the moving wheel, pulled out from the processing container, and transferred to the exchange carriage. Step 5: Replace the old roll pulled out to the exchange cart with a new roll. Step 6: The new roll and the chock are integrally moved on the telescopic rail by the moving wheel and inserted into the processing container. Step 7: The suspension / movement wheel provided on the upper part of the chock of the new roll is suspended from the inclined rail, and the movement wheel provided on the lower part of the choc is separated from the telescopic rail. . Step 8: Shrink the telescopic rail and take it out of the processing container.

According to the invention of claim 4 of the present application, as the step 3 is pulled out of the processing vessel, the suspension / movement wheel is lowered along the inclined rail, and is gradually inserted under the roll. The moving wheel provided in the lower portion of the chock contacts the telescopic rail, and the moving wheel is placed on the telescopic rail by further pulling out the roll. 3. A method for replacing a roll of a metal strip processing apparatus according to 3.

According to the present invention, since the rail enters and exits the processing container only at the time of roll replacement and is not always installed, the corrosion of the rail at the time of operation is eliminated, so that the roll replacement can be performed smoothly. Further, since there is no rail in the processing container, threading is facilitated.

Moreover, it becomes possible to suppress the bending of a rail by providing each of the fixed base to which a rail is fixed to the outer side of the both wall surfaces of a processing container. In addition, by providing the opening / closing door, scattering of the cleaning liquid to the outside of the container can be suppressed.

The roll exchange apparatus of the processing apparatus of the metal strip of this invention is shown, (a) is a top view, (b) is a front view. (A) is the schematic which shows the support structure of the upper roll of the exchange apparatus of the horizontal roll of this invention, (b) is a figure which shows an inclination rail. (A) is a schematic side view of the hanging support structure for a chock according to the present invention, and (b) is an enlarged view of an inclined rail portion. The roll exchange apparatus of this invention is shown, (a) is a figure which shows arrangement | positioning of a fixed rail and a movable rail, (b) is the schematic in the state which the movable rail extended. It is explanatory drawing which shows the pulling-out process of the lower roll by this invention. It is explanatory drawing which shows the installation process of the new lower roll by this invention. In the roll drawer according to the present invention, the roll shows the state of transfer from the inclined rail to the rail of the roll changer, (a) before pulling out, (b) the moving state of the suspension / movement wheel on the inclined rail, (C) is a figure which shows the state after transfer. It is the schematic of the roll exchange apparatus of the conventional metal strip washing | cleaning apparatus.

An embodiment of the present invention will be described with reference to the drawings.

  In FIG. 1 and FIG. 2, for example, a roll exchanging device 3 that can move along the cleaning device 1 is adjacently disposed on the drawer side of the roll 2 of a metal strip cleaning device (hereinafter referred to as “cleaning device”) 1. FIG. 1 shows an example of a ringer roll that removes liquid by sandwiching a strip as a roll. In addition to the ringer roll, the cleaning apparatus 1 also includes a brush roll that brushes the strip surface with a brush (not shown). In the present invention, the roll refers to a ringer roll and a brush roll.

The roll 2 disposed in the cleaning container 1 a of the cleaning apparatus 1 is composed of a lower roll 4 and an upper roll 5. The shafts at both ends of the lower roll 4 and the upper roll 5 penetrate from the opening / closing door 1b provided on both wall surfaces of the cleaning container 1a to the outside of the cleaning container 1a. And the chock 7 is rotatably supported.

Of the chocks 6 and 7 on both sides, the chock on the roll drawer side is provided with a connecting member 8 for connecting to the roll moving carriage 22 of the roll exchanging device 3.

  The chocks 6 on both sides of the lower roll 4 are suspended and supported by an elevating frame 9 which is an elevating means for raising and lowering the lower roll 4 and the chock 6 integrally. The elevating frame 9 is vertically supported by the upper frame 10 of the portal frame that surrounds the upper part of the ringer roll 2.

Similar to the chock 6 of the lower roll 4, the chock 7 on both sides of the upper roll 5 is suspended and supported by a lifting frame 12 which is a lifting means for lifting and lowering the upper roll 5 and the chock 7 integrally. The lifting frame 12 is vertically supported by an upper frame 13 of a portal frame that surrounds the upper part of the ringer roll 2.

A moving wheel 11 is attached to the lower part of the chock 6 of the lower roll 4, and a suspension / moving wheel 15 placed on an inclined rail 16 described later is provided on the upper part of the chock 6. When the lower roll 4 is exchanged, the moving wheel 11 moves on the fixed roll 20 and the movable rail 21 of the roll changing device 3, and the suspension / moving wheel 15 moves on the inclined rail 16.

Similarly to the chock 6 of the lower roll 4, the chock 7 of the upper roll 5 has a moving wheel 11 attached to the lower part of the chock 7 and is placed on an inclined rail 16 described later on the upper part of the chock 7. A suspension / movement wheel 15 is provided. When the upper roll 5 is exchanged, the moving wheel 11 moves on the fixed roll 20 and the movable rail 21 of the roll changing device 3, and the suspension / moving wheel 15 moves on the inclined rail 16.

2 and 3, the suspension / movement wheels 15 of the chocks 6 and 7 are respectively connected to small inclined rails 16 provided in parallel to the roll pull-out direction on both sides of the lower ends of the elevating frames 9 and 12. The roll chock 6, 7 is suspended and supported by this.

The upper surface of the inclined rail 16 is formed by an inclined surface 16b that is inclined downward toward the drawer side of the upper roll 5 after the horizontal surface 16a. The height of the horizontal surface 16a is 3 mm, for example. The suspension / movement wheel 15 is stably held without rolling by the horizontal surface 16a, the step between the rails 20 and 21 of the roll changer 3 is eliminated by the inclined surface 16b, and the suspension / movement wheel 15 is inclined. Smooth transfer from 16b to the rails 20 and 21 of the roll exchanging device 3 becomes possible. The smooth transfer of the roll changer 3 to the rails 20 and 21 will be described with reference to the schematic diagrams of FIGS. 7 (a) to 7 (b) show parts necessary for the explanation of pulling out the upper roll 5, and the lower roll 4 and the cleaning container 1a are not shown in order to simplify the drawing.

In FIG. 7A, when the upper roll 5 is replaced, after the movable rail 21 is provided in the cleaning container, the roll moving carriage 22 and the upper roll 5 are coupled by the connecting member 8. After the coupling, when the upper roll 5 is moved in the pulling direction (left direction in the figure) by the roll moving carriage 22, as shown in FIG. The wheel 15 rolls downward on the inclined surface of the inclined rail 16 provided at the lower part of the lifting frame 12. As the movement of the upper roll 5 in the pull-out direction proceeds, the gap between the moving wheel 11 under the chock and the rails 20, 21 is gradually reduced, and the upper roll 5 can be smoothly transferred to the rails 20, 21. It becomes.

In FIG. 1, FIG. 4, and FIG. 7, the roll exchanging device 3 arranged adjacent to the cleaning device 1 can be moved on the rail along the cleaning device 1 by a roll exchanging carriage 17. The roll exchanging carriage 17 is provided with telescopic rails 20 and 21 that can be raised and lowered so that the height can be adjusted according to the exchange level of the upper and lower rolls 4 and 5. In this embodiment, the frame 18 on which the roll exchanging device 3 is mounted can be moved up and down by the rotation of the screw rod 19.

The telescopic rail includes a fixed rail 20 and a movable rail 21, and the movable rail 21 slides along the fixed rail 20 and expands and contracts. A roll moving carriage 22 is movably disposed on the fixed rail 20. The frame 18 can be expanded and contracted by a manual handle, the movable rail 21 is fixed to the roll moving carriage 22 with a pin or the like, and the roll moving carriage 22 can be moved forward and backward.

  Because of the telescopic rail, when the roll is replaced, the outer fixed rail 20 and the inner movable rail 21 have the operation side chock on the roll pull-out side mounted on the fixed rail 20 and the rear drive side chock on the movable rail 21. Since the roll can be smoothly moved between the cleaning device 1 and the roll exchanging device 3 without transferring between the rails, the roll exchanging device can have a simple structure.

A tapered inclined guide surface 20a (FIG. 1) is provided on the back surface of the tip of the movable rail 21, and the fixed base 27 on the driving side at the back of the roll is inclined downward on the drawer side so that the rails 20, 21 You may make it mount smoothly on the fixed stand 27 provided in the outer side of both the wall surfaces of the washing | cleaning apparatus 1 by an inclination. The fixed base 7 may be provided with a liner 28 on which the movable rail 21 slides.

  Next, the roll changing process of the roll changing apparatus having the above configuration will be described with reference to FIGS.

A: Removal of lower roll (1) Step 1
5A, in order to replace the lower roll 4, the roll exchanging carriage 17 of the roll exchanging device 3 is moved along the cleaning device 1 and stopped at the position of the lower roll 4 to be replaced, and then the screw rod The telescopic rails 20 and 21 are moved up and down by the rotation of 19 to adjust the height, and the level of the rails 20 and 21 is set to the replacement level of the lower roll 4. Open the door 1b of the cleaning container 1a.

The lower roll 4 to be replaced and the chocks 6 on both sides are integrally raised and lowered by the raising and lowering frame 12 which is a raising and lowering means, and a telescopic movable rail 21 from the outside of the cleaning container 1 a is moved to the lower side of the moving wheel 11 of the chock 6. Forms a space in which can be inserted.

(2) Step 2
In FIG. 5B, the telescopic fixed roll 20 and the movable rail 21 of the roll changer 3 are extended by rotating a manual handle (not shown) and inserted into a space formed on the lower side of the moving wheel 11. Further, after the movable rail 21 is fixed to the roll moving carriage 22 with a pin, the roll moving carriage 22 is moved on the fixed rail 20 to extend the movable rail 21, and the fixed side on the driving side at the back of the lower roll 4. Place on 27 and hand over.

(3) Process 3
In FIG.5 (c), the raising / lowering flame | frame 9 is lowered | hung and the moving wheel 11 is lowered | hung on the fixed rail 20 and the movable rail 21 extended. As described above with reference to FIGS. 7A to 7C, the procedure of lowering the moving wheel 11 is performed by connecting the roll moving carriage 22 and the upper roll 5 after passing the movable rail 21 in the cleaning container. After being joined by the member 8, the upper roll 5 is moved in the pulling direction by the roll moving carriage 22, and the suspension / movement wheel 15 provided on the upper portion of the chock rolls the inclined surface of the inclined rail 16 downward. The moving wheel 11 is transferred to the rails 20 and 21.
At this time, the wheel 11 of the operation side chock 6 rides on the fixed rail 20, and the wheel 11 of the drive side chock 6 rests on the movable rail 21.

(4) Step 4
Next, as shown in FIG. 5D, the lower roll 4 and the chock 6 are integrally moved by the moving wheels 11 by moving the roll moving carriage 22 backward on the fixed roll 20. By moving up, it is pulled out of the cleaning container 1 a and transferred to the roll exchanging carriage 17.

B: Installation of new lower roll (1) Process 5
The loading of the old roll and the new roll drawn out by the exchange cart is exchanged.
In FIG. 6 (e), after the drawn out lower roll 4 is carried out from the roll changer 3 by the crane 26, a new lower roll is carried in by the crane 26.
In FIG. 6 (f), the moving wheel 11 on the operation side of the chock 6 is placed on the fixed rail 20, and the driving wheel 11 on the driving side is placed on the movable rail 21. The movable rail 21 remains in the cleaning container 1a.
The roll moving carriage 22 is connected to the connecting member 8 of the new lower roll 4.

(2) Step 6
As shown in FIG. 6G, the new lower roll 4 and the chock 6 are integrally moved on the rails 20 and 21 toward the cleaning container 1a by the moving wheel 11 and inserted into the cleaning container 1a.

(3) Step 7
When the new lower roll 4 is inserted into the cleaning container 1a, the suspension / movement wheel 15 provided on the upper portion of the chock 6 of the new lower roll 4 is suspended from the inclined rail 16 (see FIG. 2). The moving wheel 11 provided at the lower part of the rail is lifted by the lifting frame 9 to be separated from the rails 20 and 21.

(4) Step 8
As shown in FIG. 6 (h), the movable rail 21 is fixed to the roll moving carriage 22 with a pin, the moving carriage 22 is retracted, the movable rail 21 is contracted, and is taken out of the cleaning container 1 a, and then into the fixed roll 20. return. Thereafter, the open / close door 1b of the cleaning container 1a is closed.

C: Replacing the upper roll The removal of the upper roll and the installation of the new upper roll are performed in the same procedure as the above-described steps 1 to 8 of the lower roll, and thus the description thereof is omitted.

1: Cleaning device 1a: Cleaning container 1b: Opening / closing door 2: Horizontal roll 3: Roll changing device 4: Lower roll 5: Upper roll 6: Chock 7: Chock 8: Connecting member 9: Lifting frame 10: Upper frame 11: Moving wheel 12: Lifting frame 13: Upper frame
15: Suspended / moving wheel 16: Inclined rail 17: Roll exchanging carriage 18: Frame 19: Screw rod 20: Fixed rail 20a: Inclined guide surface 21: Movable rail 22: Roll moving carriage 23: Lower roll exchanging rail 24 : Rail for upper roll exchange 25: Rail 26 for roll exchange carriage: Crane 27: Fixing base 28: Liner

Claims (4)

A roll is provided inside the processing container up and down through both walls of the processing container, a chock that pivotally supports both sides of the roll is provided outside the both walls of the processing container, and the roll and the chock are integrated. In the roll exchanging device of the processing device of the metal strip that supports the chock so that it can be raised and lowered by the lifting means that moves up and down automatically ,
An inclined rail having an upward inclined surface on the outer side of the processing container is provided at the lower part of the lifting means on one side, and the upper surface is directed downward to the center side of the processing container on the lower side of the lifting means on the other side. An inclination rail having an inclined surface is provided, a suspension / movement wheel mounted on the inclination rail is provided at the upper part of the chock, and a movement wheel is provided at the lower part of the chock, and the lifting means is provided when the roll is replaced. The metal strip processing apparatus includes a roll exchanging carriage in which a telescopic rail that can be inserted from the outside of the processing container is mounted on the lower side of the moving wheel of the chock that is lifted and lowered integrally with the roll. A roll exchanging device for a metal strip processing device, which is disposed adjacent to the metal strip. Opening / closing doors through which the front ends of the telescopic rails can pass are provided on both wall surfaces of the processing container, and fixing bases to which the telescopic rails are fixed are provided outside the both wall surfaces of the processing container. The roll changing apparatus of the metal strip processing apparatus according to claim 1. A roll exchanging method for a metal strip processing apparatus comprising the following steps 1 to 8 by the roll exchanging apparatus for the metal strip processing apparatus according to claim 1.
Step 1:
The roll and the chock to be exchanged by the elevating means are integrally raised and lowered to form a space in which the telescopic rail can be inserted from the outside of the processing container under the moving wheel of the chock. .
Step 2:
A telescopic rail is extended and inserted from the outside of the processing container into the space formed below the moving wheel and is handed over.
Step 3:
The moving wheel is placed on the telescopic rail provided.
Step 4:
The roll and the chock are integrally moved on the telescopic rail by the moving wheel, pulled out from the processing container, and transferred to the exchange carriage.
Step 5:
The old roll pulled out to the exchange cart is replaced with a new roll.
Step 6:
The new roll and the chock are integrally moved on the telescopic rail by the moving wheels and inserted into the processing container.
Step 7:
The suspension / movement wheel provided on the upper part of the chock of the new roll is suspended from the inclined rail, and the movement wheel provided on the lower part of the choc is separated from the telescopic rail.
Step 8:
The telescopic rail is shrunk out of the processing vessel. As the step 3 pulls out the roll to the outside of the processing container, the suspension / movement wheel descends along the inclined rail, and the telescopic rail inserted gradually under the roll gradually lowers the chock. The metal strip processing apparatus according to claim 3, wherein the moving wheel provided on the surface of the metal strip contacts the moving wheel and the moving wheel is placed on the telescopic rail by pulling out the roll. Roll exchange method.

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