JP3017075B2 - Steel strip wiping equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping apparatus for wiping and removing rolling oil and the like adhering to the surface of a steel strip when rolling the steel strip by a reverse rolling mill or the like, and more particularly to a wiping apparatus for thick and thin plates. The present invention relates to a steel strip wiping device that is effective when both steel strips are handled by the same pass line.

[0002]

2. Description of the Related Art When a steel strip is rolled, rolling oil is supplied to a roll bite portion. And since a part of this rolling oil remains adhered to the steel strip surface, if the steel strip is wound up as it is, the steel strip will skid. In addition, only the amount
Since the used rolling oil is not collected in the rolling oil supply system, it contributes to the deterioration of the basic unit of the rolling oil.

[0003] For this reason, a wiping device is usually provided at the entrance and exit of the reverse rolling mill and the exit of the tandem rolling mill for the purpose of wiping and removing cooling water, rolling oil and the like adhering to the surface of the steel strip. .

As the wiping devices generally used, there are, for example, a roll wiping device and a pad wiping device. The roll-type wiping device 50 presses the wiping rolls 50a provided vertically above and below the steel strip 52 to be conveyed, respectively, against the surface of the steel strip 52, and sandwiches the steel strip 52 (see FIG. 7). By rotating each of the wiping rolls 50a in accordance with the transfer speed, the rolling oil or the like on the surface of the steel strip 52 is wiped off.

Further, the pad-type wiping device 51 presses the wiping pads 51a provided above and below the steel strip 52 to be conveyed to the surface of the steel strip 52, respectively, so that the steel strip 52 is sandwiched. This is for wiping and removing rolling oil and the like on the surface of the band 52 (see FIG. 7).

Here, the above-mentioned roll-type wiping device 50
In the wiping roll 50a, as the plate thickness of the steel strip 52 becomes thinner, the pressing force becomes insufficient due to the deflection of the roll, and the rolling oil or the like enters between the steel strip 52 and the wiping roll 50a due to abrasion of the roll surface. And wiping defects are likely to occur. Further, there is a possibility that a slip called a slip flaw may be formed on the surface of the steel strip 52 due to the slip of the wiping roll 50a. For this reason, the roll wiping device 50 is generally used for a thick steel strip 52.

On the other hand, the wiping pad 51a of the pad-type wiping device 51 has good adhesion to the surface of the steel strip 52 and good wiping performance. However, as the thickness of the steel strip 52 increases, the width direction end of the steel strip 52 becomes larger. The upper and lower wiping pads 51a are likely to have gaps at the portions where the upper and lower wiping pads 51a meet, and wiping defects are likely to occur. Further, the friction between the steel strip 52 and the wiping pad 51a is large, and in the case of a thick plate, the wiping pad 51a is greatly damaged and worn. For this reason, a pad-type wiping device is generally used for a thin steel strip 52.

[0008] From the above, in the case of a line in which both a thick steel strip and a thin steel strip are rolled on the same pass line, such as a reverse rolling mill, as shown in FIG. The roll-type wiping device 50 and the pad-type wiping device 51 are installed independently and in parallel along a pass line, and only one of the two devices 50 and 51 is used according to the thickness of the steel strip 52 to be rolled. We use properly to use. In FIG. 7, a case where a reverse rolling mill is used as the rolling mill 53 is illustrated. Therefore, a roll wiping device 50 and a pad wiping device 51 are provided on both sides of the rolling mill 53, respectively.

[0009]

However, in the conventional wiping apparatus, when the same pass line is used for rolling both a thick steel strip and a thin steel strip, the roll type wiping apparatus 50 and the pad are used. It is necessary to install the wiping device 51 in parallel.

For this reason, if space is limited, only one of the devices 50 and 51 can be installed, or both devices 50 and 51 cannot be installed.
There is a problem that the remodeling cost for making 0,51 usable becomes high and the installation cost becomes high.

Further, since the roll-type wiping device 50 and the pad-type wiping device 51 are used independently, the switching between the two devices 50 and 51 in accordance with the plate thickness of the steel strip 52 is apt to be incomplete, and both devices are liable to occur. If the wiping roll is used for a long time while the wiping rolls 50 and 51 are used together, there is a possibility that the life of the wiping roll is shortened and the replacement frequency is increased. When the replacement frequency increases, the roll cost for replacement, the maintenance man-hours, and the non-operation time increase, and there arises a problem that the original unit price, the maintenance cost increases, or the productivity decreases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a wiping apparatus capable of saving space and equipment, reducing equipment costs, and preventing rolls and pads from being used together. And

[0013]

In order to solve the above problems, a steel strip wiping apparatus according to the present invention presses a wiping roll or a wiping pad against a surface of a conveyed steel strip and adheres to the surface of the steel strip. A wiping device for removing rolling oil or the like, wherein a wiping roll and a wiping pad are arranged in parallel with each other and a connecting member for connecting the wiping roll and the wiping pad, and the wiping roll and the wiping pad are connected rotatably about an axis parallel to the wiping roll and the wiping pad. A support member for supporting the member, locking means capable of restraining rotation between the connection member and the support member in a state where the wiping roll or the wiping pad faces the steel strip surface, and a wiping roll via the connection member Alternatively, a pressing device capable of pressing the wiping pad toward the surface of the steel strip is provided.

In the present invention, one of the wiping roll and the wiping pad approaches the steel strip surface by rotating the connecting member. In this state, when the pressing device is operated by restricting the rotation of the connecting member by the locking means, only one of the wiping roll or the wiping pad is pressed against the target steel strip surface, and the rolling oil or the like on the steel strip surface is removed. Wipe off.

[0015]

Next, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as shown in FIG. 1, the present invention is applied to a rolling step of rolling a steel strip 2 by a reverse rolling mill 1, and the wiping devices 3 of the present embodiment are provided on both sides of the reverse rolling mill 1. Is installed.
In addition, in FIG. 1, 4 is a deflector roll which changes the conveyance direction of the steel strip 2 to a winding device or a rewinding device side.

In the wiping device 3, as shown in FIGS. 2 and 3, both ends of the rotating shaft P1 of the wiping roll 5 and both ends in the longitudinal direction of the wiping pad 6 are connected by connecting members 7, respectively. . The wiping roll 5 and the wiping pad 6 connected via the connecting member 7 are set and connected such that the rotation axis P1 of the wiping roll 5 and the longitudinal direction of the wiping pad 6 are parallel to each other. .

Here, FIGS. 2 and 3 show a state in which the wiping device 3 is installed only on the upper side of the steel strip 2, but a similar device is also provided on the lower side of the steel strip 2. Installed symmetrically with the device.

Each of the connecting members 7 is supported via a shaft member 9 at the tip of a piston rod 8a of a cylinder device 8, respectively. The cylinder device 8 constitutes a pressing device, and its piston rod 8a is installed so as to be able to advance and retreat in a direction orthogonal to the rotation axis P1 of the wiping roll 5, that is, toward the surface of the target steel strip 2. . The shaft member 9 is fixed to the distal end of the piston rod 8a in a state where the shaft P2 is parallel to the rotation axis P1 of the wiping roll 5, and forms a support member.

Here, the mounting position of the shaft member 9 to the connecting member 7 is set between the mounting position of the rotating shaft P1 of the wiping roll 5 and the mounting position of the wiping pad 6, so that the shaft is mounted. When the connecting member 7 is rotated around the member 9, both the wiping roll 5 and the wiping pad 6 rotate around the axis P <b> 2 of the shaft member 9, and one of the wiping roll 5 or the wiping pad 6 is placed on the surface of the steel strip 2. , And the other is separated.

The connection between the shaft member 9 and the connecting member 7 has the following structure. That is, the tip 9 of the shaft member 9
a is inserted into an insertion hole 10 provided in the connecting member 7 as shown in FIG. 4, and a bearing member 11 is interposed between the outer peripheral surface of the shaft member 9 and the inner peripheral surface of the insertion hole 10. Inserted.
As a result, the connecting member 7 is supported by the shaft member 9 in a rotatable state about the axis P2 of the shaft member 9.

The insertion hole 10 of the connecting member 7 has a large diameter on the piston rod 8a side to form a large diameter portion 10a. The cross-sectional shape of the large diameter portion 10a is processed into a square shape.

On the outer periphery of the shaft member 9, a cylindrical slide member 12 is provided coaxially. The outer periphery of the slide member 12 has a square cross section that can be fitted to the large-diameter portion 10a of the connection member 7. The slide member 12 is spline-coupled to the shaft member 9 so that it can move only in the axial direction of the shaft member 9.
Then, by moving the slide member 12 so as to be fitted to the large diameter portion 10a, the connecting member 7 and the shaft member 9 are integrated via the slide member 12.

The shaft member 9 is provided with a through hole 15 penetrating in the radial direction. The position of the through hole 15 is
When the slide member 12 is fitted to the large diameter portion 10a, the slide member 12 is set to a position near one surface of the slide member 12.

The lock pin 13 is inserted into the through hole 15.
Is inserted, the movement of the slide member 12 is prevented. Here, in the present embodiment, a locking means is constituted by the large diameter portion 10a, the slide member 12, the through hole 15, and the lock pin 13.

Next, the operation and operation of the wiping device 3 will be described. The wiping device 3 is set so that the surface of the target steel strip 2 and the rotation axis P1 of the wiping roll 5 are parallel.

When the target steel strip 2 is a thick plate, the wiping roll 5 is brought close to the surface of the steel strip 2 as shown in FIGS. For switching between a thick plate and a thin plate, for example, a plate thickness of steel strip 2 of about 1.00 mm or more is regarded as a thick plate, and a sheet thickness of less than about 1.00 mm is regarded as a thin plate.

Further, as shown in FIG. 4A, the slide member 12 is moved toward the connecting member 7 to
2 is fitted to the large diameter portion 10a of the connecting member 7. Thereby, the shaft member 9 and the connecting member 7 are integrated, and the rotation of the connecting member 7 is restricted. Further, by inserting the lock pin 13 into the through hole 15 provided in the shaft member 9, the slide member 12 is prevented from coming off from the large diameter portion 10a.

In this state, when the piston rod 8a of the cylinder device 8 is advanced toward the steel strip 2, the wiping roll 5 is pressed against the surface of the steel strip 2 via the shaft member 9 and the connecting member 7.

By performing the above operation with the wiping devices 3 arranged vertically, the steel strip 2 is sandwiched by the wiping roll 5 from above and below at a predetermined pressure. The pressure may be set to about 50 kgf / cm ² .

Then, each wiping roll 5 rotates with the movement of the steel strip 2, and the rolling oil and the like on the surface of the steel strip 2 are sequentially wiped and removed. Next, when the steel strip 2 to be processed is changed from a thick plate to a thin plate, the piston rod 8a is once retracted to separate the wiping roll 5 from the surface of the steel strip 2. Next, as shown in FIG. 4B, the lock pin 13 is pulled out from the through hole 15 of the shaft member 9, and the slide member 12 is made movable so as to be pulled out from the large diameter portion 10a. As a result, the connecting member 7 becomes rotatable around the axis P2 of the shaft member 9.

Next, the connecting member 7 is rotated by 180 degrees so that the pad portion 6a of the wiping pad 6 approaches and faces the surface of the steel strip 2. Then, again, the slide member 12
To fit the large diameter portion 10a to restrict the rotation of the connecting member 7 and insert the lock pin 13 into the through hole 15 to prevent the slide member 12 from moving (FIG. 4A).
reference).

In this state, when the piston rod 8a is advanced, the pad portion 6a of the wiping pad 6 is pressed against the surface of the steel strip 2 via the shaft member 9 and the connecting member 7, and the surface of the steel strip 2 to be conveyed is moved. Rolling oil is wiped off in sequence.
The pressing force of the pad may be set to about 30 kgf / cm ² .

As described above, the wiping device 3 of the present embodiment can be used for both the thick and thin steel strips 2, so that the same line handles both the thick and thin steel strips 2. However, a single wiping device can be used. Therefore, the space occupied by the wiping device is smaller than before.

Further, since only one of the wiping roll 5 and the wiping pad 6 is used without fail,
As in the related art, the simultaneous use of the wiping roll 5 and the wiping pad 6 is avoided.

Further, even if the wiping roll 5 and the wiping pad 6 are incorporated into one device, in the device of the present embodiment, the wiping roll 5 and the wiping pad 6 can be connected only by rotating the connecting member 7 after releasing the locked state. Since the switching can be performed, the switching can be performed easily and quickly. In other words, the time and effort required for switching are small, and the time required for switching is short.

In the above embodiment, the case where the shaft member 9 and the connecting member 7 are rotatably connected is described, but the present invention is not limited to this. For example,
The shaft member 9 and the connecting member 7 may be integrally connected, and the shaft member 9 and the piston rod 8a may be rotatably connected.

Further, in the above embodiment, the locking means is constituted by using spline connection or the like, but the locking means is not limited to this. Other well-known mechanisms may be adopted as long as the mechanism can releasably fix the connecting member 7 and the shaft member 9.

Further, in the present embodiment, an example is described in which the wiping device 3 is disposed between the rolling mill 1 and the deflector roll 4, but the present invention is not limited to this. For example, it may be arranged at another pass line position, such as between the deflector roll 4 and the winding device, or between a plurality of deflector rolls.

In the above-described embodiment, an example is described in which one wiping roll 5 and one wiping pad 6 are connected by the connecting member 7, but the present invention is not limited to this. For example, a plurality of wiping rolls 5 and wiping pads 6 may be connected to the connection member 7.
In this case, when attaching the plurality of wiping rolls 5 and the like to the connecting member 7, the plurality of wiping rolls 5 and the like may be configured to be able to be simultaneously pressed against the surface of the target steel strip 2 or the plurality of wiping rolls 5 and the like. May be pressed against the surface of the steel strip 2 and the other wiping rolls 5 may be spare rolls.

In the above embodiment, the rotation axis P1 of the wiping roll 5 and the axis P2 of the shaft member 9 are eccentric, and both the wiping roll 5 and the wiping pad 6 are turned with the rotation of the connecting member 7. That is, the position of the wiping roll 5 is also changed, but the present invention is not limited to this. For example, as shown in FIG. 6, the shaft member 9 and the wiping roll 5 are coaxially and integrally formed, and only the wiping pad 6 is turned around the axis P2 of the shaft member 9 by the rotation of the connecting member 7. You may comprise.

In the above-described embodiment, the wiping device installed on the upper surface side of the steel strip 2 and the wiping device installed on the lower surface side are described as separate bodies. The upper and lower wiping rolls and the like may be configured to be connected to and separated from each other by connecting the upper and lower connecting members facing each other and driving the actuator.

The connecting member 7 and both ends in the longitudinal direction of the wiping pad 6 may be rigidly connected to each other, but the wiping pad 6 can be pivotally moved about the mounting axis by a predetermined angle to the connecting member 7. They may be connected. With such a configuration, the pad portion 6a of the wiping pad 6 can follow a change in the vertical direction of the surface of the steel strip 2, and the contact state between the pad portion 6a and the surface of the steel strip 2 is improved, thereby removing rolling oil and the like. The rate also improves.

[0043]

As described above, in the steel strip wiping apparatus of the present invention, even when both thick and thin steel strips are rolled on the same pass line, one wiping apparatus can be used. As a result, the space occupied by the wiping device becomes smaller than before and the equipment is reduced, leading to a reduction in equipment cost.

Further, the simultaneous use of the wiping roll and the wiping pad is prevented, and the switching between the wiping roll and the wiping pad can be performed simply by rotating the connecting member, so that the switching operation can be performed easily and quickly. There is. Therefore, the work time for switching between the wiping roll and the wiping pad according to the thickness of the steel strip can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an arrangement position of a wiping device according to an embodiment of the present invention.

FIG. 2 is a view showing the wiping device according to the embodiment of the present invention as viewed from a steel strip longitudinal direction.

FIG. 3 is a diagram showing the wiping device according to the embodiment of the present invention as viewed from a steel strip width direction.

FIG. 4 is a diagram showing a lock mechanism used in the wiping device according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a relationship between a slide member and a shaft member according to the embodiment of the present invention.

FIG. 6 is a diagram showing another example of the wiping device according to the embodiment of the present invention.

FIG. 7 is a configuration diagram showing an arrangement of a conventional wiping device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rolling machine 2 Steel strip 3 Wiping device 5 Wiping roll 6 Wiping pad 7 Connecting member 8 Cylinder device 8a Piston rod 9 Shaft member 10 Insertion hole 10a Large diameter portion 12 Slide member 13 Lock pin

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-71911 (JP, A) JP-A-4-46624 (JP, A) JP-A-59-101219 (JP, A) 22109 (JP, U) Japanese Utility Model Hei 4-64402 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B21B 45/02

Claims (1)

(57) [Claims] A wiping device for pressing a wiping roll or a wiping pad against a surface of a steel strip to be conveyed to remove rolling oil or the like adhering to the surface of the steel strip,
A connecting member for connecting the wiping roll and the wiping pad in a state where the wiping roll and the wiping pad are arranged in parallel with each other, a supporting member for supporting the connecting member rotatably about an axis parallel to the wiping roll and the wiping pad, and a wiping roll or Locking means capable of restraining rotation between the connecting member and the support member in a state where the wiping pad faces the steel strip surface, and pressing a wiping roll or a wiping pad toward the steel strip surface via the connecting member. And a possible pressing device.