JPH0341853Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention makes it possible to use rolling oil when cold rolling or temper rolling a metal strip using rolling oil without having to take into account roll deflection of the wiping roll. The present invention relates to a roll wiper that can wipe uniformly, can easily replace the wiping roll, and can reduce the cost of lining the wiping roll.

[Conventional technology]

Rolling oil is generally used when cold rolling or temper rolling a metal strip, and as shown in FIG. 11, a rolling mill 22 ( In the illustrated example, roll wipers are installed at the rear of the Sendzimir mill (in the illustrated example, it is a berth type, so in front and rear). This roll wiper can be a set of two rolls lined with hard rubber or the like, arranged in two stages above and below, or a set of multiple rolls arranged in a staggered pattern. Common.

As a specific example, as shown in FIG. 12, there are upper and lower wiping rolls 2' and 3' that sandwich the metal strip 1 from above and below, and an upper frame 8 that rotatably supports each wiping roll 2' and 3'. 1, a lower frame 9', and a hydraulic cylinder 17' for vertically moving each frame 8', 9' along a guide rod 15'.

[Problem that the invention attempts to solve]

Such conventional roll wipers have the following problems.

In other words, in a roll wiper, the smaller the diameter of the wiping roll lined with hard rubber or the like, the better the wiping effect, but since the wiping roll is strongly pressed against the metal strip, roll deflection occurs as shown in Figure 13. The smaller the diameter of the roll, the greater the roll deformation, which not only makes it impossible to wipe the central part sufficiently, but also has the problem that the wiping roll has to be replaced frequently because the lining layer wears out at a high rate.

In order to eliminate these problems, it is possible to make the diameter of the wiping roll as large as possible, but if the diameter of the wiping roll is made too large, the angle at the contact area between the metal strip and the roll surface becomes small, and the rolling oil There were problems in that the wiping rolls stopped rotating due to the infiltration of water and caused a hydroplane phenomenon, resulting in poor wiping and scratches on the metal strip.

On the other hand, roll wipers are known that use small-diameter metal wiping rolls with low wear rate and roll deflection to reduce the number of poor pressure connections between the wiping rolls and the metal strip. There have been problems in that the metal strip is easily scratched by scratches, etc., and the roll is heavy, resulting in poor wiping and scratches due to poor rotation.

In addition, for both lining rolls and metal rolls, shaft support bearings are attached to both ends of the wiping roll, and these shaft support bearings are structured to fit tightly into the frame, so the wiping roll When the diameter of the wiping roll decreases due to wear, it becomes impossible to strongly hold the metal strip and the wiping effect decreases.As a result, the wiping roll must be replaced with a new one even if there is still a considerable amount of usable lining layer left. The problem was that it was uneconomical not only in terms of cost, but also in terms of cost.

Furthermore, the structure of the wiping roll and the upper and lower frames is generally such that the upper and lower frames supporting the wiping roll are skewered on guide rods, as shown in FIG. When replacing the rolls, all of the wiping rolls must be removed from the line using a crane, porter bar, etc. Especially for roll wipers equipped with back-up rolls, this becomes a hindrance and makes it difficult to replace the wiping rolls. There was a problem that the workability was extremely poor.

[Means for solving problems]

The inventors of the present invention have solved the various problems of the above-mentioned conventional techniques, and have been able to eliminate the wiping roll's deflection and perform uniform wiping, improve the workability of replacing the wiping roll, and reduce the lining cost of the wiping roll. As a result of intensive research in order to develop a roll wiper that can reduce the amount of noise, we used a wiping roll with a small diameter lined with a hard polymer material, applied a back-up roll to the wiping roll, and also developed a support for the shaft support bearing. They discovered that the problems of the prior art described above could be solved all at once by providing horizontal grooves and gaps in the section, and completed the present invention.

In other words, the present invention provides a roll wiper in which the roll shafts of small-diameter wiping rolls arranged in upper and lower stages are supported by an upper frame and a lower frame, respectively. Each roll is lined with an elastic body made of a molecular material, and bearings for supporting the roll are attached to both ends of the roll shaft, and an upper back-up roll group is rotatably fixed to the upper frame in the direction of the roll axis. At the same time, there is a lateral groove in which the upper wiping roll is inserted through the roll shaft support without contacting the upper back-up roll group, and the outer circumferential surface of the upper wiping roll is pressed against the upper back-up roll group at the upper part of the lateral groove. A gap with a sufficient height to push the rolls up to A vertical groove into which a shaft support bearing that can be lowered into contact with the roller shaft is inserted is bored in the roll shaft support part, and further, each of the upper and lower frames is provided with a vertical movement device. This relates to roll wipers.

Hereinafter, one embodiment of the roll wiper according to the present invention will be described in detail based on the drawings.

1 to 10 show one embodiment of a roll wiper according to the present invention, in which FIG. 1 is a front view of the roll wiper, FIG. 2 is a sectional view taken along line A-A in FIG. The figure is a side view of the roll shaft support drilled in the upper frame, FIG. 4 is a front view of the same, FIG. 5 is a side view of the roll shaft support drilled in the lower frame, and FIG. 6 is a side view of the roll shaft support drilled in the upper frame. The same plan view, FIG. 7, and FIG. 8 show a state in which a roll shaft support bearing is inserted into the roll shaft support part drilled in the upper frame, and the upper wiping roll is pushed up by the lower wiping roll to sandwich the metal band. Explanatory drawings, Figure 9 is a side view showing a state in which the roll shaft support bearing is inserted into the roll shaft support part of the upper frame and a block is attached between them, and Figure 10 is a wiping roll and back up roll group. FIG. 3 is a schematic diagram showing the relationship between the metal band and the metal band.

In the drawing, 1 is a metal strip to be rolled, 2 and 3 are upper and lower wiping rolls, respectively, and an elastic body 4 made of a hard polymer material such as hard nylon resin, neoprene, urethane, etc. is attached to the outer peripheral surface of the roll.
is lined. 5 is a roll shaft of the wiping rolls 2 and 3, 6 is a shaft support bearing attached to both ends of the roll shaft 5, and 7 is a rotatable support for the outer cylinders of the upper and lower wiping rolls 2 and 3, respectively. bearing for the outer cylinder,
8 is an upper frame, 9 is a lower frame, 10 is a group of rotatable upper back-up rolls which are fixed to the upper frame 8 and arranged in the direction of the roll axis 5; 11 is a group of rolls which are fixed to the lower frame 9; A plurality of rotatable lower back-up rolls are arranged in the direction of the shaft 5, 12 is a lateral groove bored in the roll shaft support of the upper frame 8, and 13 is provided on the upper part of the lateral groove 12. A gap 14 is a vertical groove bored in the roll shaft support portion of the lower frame 9, and 15 is an upper frame 8 and a lower frame 9.
A vertical moving device 17 consisting of a worm gear type jack that moves the upper frame 8 whose movement direction is vertically regulated by the guide rod 15, which is inserted into a guide hole provided vertically in the upper frame 8; is guide rod 1
5 is a vertical moving device consisting of a hydraulic cylinder for moving the lower frame 9 whose movement direction is vertically regulated; 18 is a fork end of a worm gear type jack 16; 19 is a frame of the guide rod 15; 20 is for shaft support. A block 21 is a lid for fixing the bearing 5.

Next, the structure of each part will be explained in detail.

The wiping rolls 2 and 3 on the upper and lower stages are basically rotatable back-up roll groups 9 and 1 on the upper and lower stages.
0, but it is also rotatably supported by shaft support bearings 6 attached to both ends of the roll shaft 5.
In addition to the above-mentioned shaft support bearing 6, the roll shaft 5 has upper and lower wiping rolls 2,
It is preferable that an outer cylinder bearing 7 that rotatably supports the outer cylinders of the upper and lower wiping rolls 2 and 3 is attached so that the outer cylinders of the upper and lower wiping rolls 2 and 3 can rotate smoothly. The diameters of the upper and lower wiping rolls 2 and 3 are desirably 30 to 100 mm in view of the wiping effect and prevention of roll deflection.
Furthermore, the hardness of the elastic body 4 made of a hard polymer material is
A range of Hs 60 to 90 is desirable from the viewpoint of wear resistance.

As shown in FIG. 10, the upper and lower backup roll groups 10 and 11 are arranged in the direction of the roll axis 5 and are rotatably fixed to the upper and lower frames 8 and 9, respectively. By moving up and down 9, the left and right upper portions and left and right lower portions of the upper and lower wiping rolls 2 and 3 are simultaneously pressed and clamped, and the arrangement is such that the two rolls are arranged as shown in Figs. They may be arranged at the same position in the front and back, or may be arranged in a staggered pattern (not shown).

A lateral groove 12 into which the shaft support bearing 6 of the upper wiping roll 2 is inserted is bored in the roll shaft support portion of the upper frame 8, and the bottom surface of the lateral groove 12 supports the upper wiping roll 2 in the upper frame 8.
The upper surface of the upper wiping roll 2 is at a position where it can be inserted without contacting the upper backup roll group 10 when inserted into the upper wiping roll group 10, and the upper surface of the upper wiping roll 2 is located at a position where the shaft support bearing 6 of the lateral groove 12 is fitted. A gap 13 is provided in the gap 13, and the lower frame 9 is moved upward along the guide rod 15 by a vertical moving device 17 consisting of a hydraulic cylinder, and the lower wiping roll 3 is moved by the lower back up roll group 11. The upper wiping roll 2 is pushed up and the upper wiping roll 2 is strongly pressed against the upper back-up roll group 10 through the lower wiping roll 3. The upper frame 8 also has a vertical movement device 1 which is a worm gear type jack and is disposed on the upper part of the upper frame 8.
6 moves up and down along the guide rod 15, and thereby the upper backup roll group 10 and the upper wiping roll 2 are moved up and down. It should be noted that if the above-mentioned gap 13 is provided only at the upper part of the shaft support bearing 6 as in the embodiment, it is superior in terms of fitability.
Since the lateral groove 12 is interposed therebetween, it may be provided in the entire upper part of the lateral groove 12.

A lower back-up roll group 11 supporting the lower wiping roll 3 is rotatably fixed to the lower frame 9, and a roll shaft support is provided with a support for inserting the lower wiping roll 3 into the lower frame 9 from above. A U-shaped vertical groove 14 for fitting the shaft support bearing 6 is bored, and as mentioned above, a vertical movement device 17 consisting of a hydraulic cylinder is provided at the bottom of the lower frame 9. When moved up and down along the guide rod 15, the lower back up roll group 11 and the lower wiping roll 3 are moved up and down.

[Effect]

The roll wiper according to the present invention having such a structure is installed at the rear of the rolling mill, and the rolling oil adhering to the surface of the metal strip 1 is transferred to the small diameter surface lined with the elastic body 4 made of a hard polymer material. By passing between the lower wiping rolls 2 and 3, wiping is ensured and the metal strip 1 is not scratched.

When installing the upper and lower wiping rolls 2 and 3, first pass the metal band 1 through the pass line, and then attach the upper and lower wiping rolls 2 and 3 to the upper frame 8 and lower frame 9, respectively. Attach to the roll shaft support. The lower wiping roll 3 is installed on the lower frame 9.
This is done by inserting the shaft support bearing 6 from above into the vertical groove 14 bored in the shaft.

To install the upper wiping roll 2, the upper frame 8 is moved upward along the guide rod 15 by driving a vertical moving device 16 consisting of a worm gear type jack, and then the upper wiping roll 2 is mounted on the shaft of the upper wiping roll 2 as shown in FIG. The supporting bearing 6 is inserted into the horizontal groove 12, and then, as shown in FIG. 8, the lower frame 9 is moved upward by a vertical moving device 17 consisting of a hydraulic cylinder, and the lower stage wiping is carried out via the lower stage back-up roll group 11. The roll 3 is pushed up, and the upper wiping roll 2 is pushed up via the lower wiping roll 3 to fit the shaft support bearing of the upper wiping roll 2 into the gap 13, and the upper stage is moved by driving the vertical movement device 16 consisting of a worm gear type jack. The frame 8 is moved downward along the guide rod 15, and the upper wiping roll 2 is strongly pressed by the upper back-up roll group 10, and the metal band 1 is aligned between the upper and lower wiping rolls 2 and 3 at a predetermined pass line. As shown in FIG.
The lateral position of the lid 21 is fixed and the lid 21 is put on.

Through such an operation, it becomes possible to easily install the upper and lower wiping rolls 2 and 3, and the roll deflection of the upper and lower wiping rolls 2 and 3 is reduced by the upper and lower back up roll groups 10 and 11. Moreover, since the above-mentioned gap 13 is provided, the upper wiping roll 2 can move up and down between the gaps 13, so that the elastic body 4, which is the lining layer of the upper and lower wiping rolls 2 and 3, is prevented from being worn out. Even if the diameter becomes smaller, if the upper wiping roll 2 is pushed down and the lower wiping roll 3 is pushed up above the vertical groove 14, the metal strip 1 will be strongly clamped and the wiping effect of rolling oil will not deteriorate. In this state, the upper and lower wiping rolls 2 and 3 whose elastic bodies 4 serving as lining layers are worn out can be used as they are.

On the other hand, when removing the upper and lower wiping rolls 2 and 3, the lower frame 9 is lowered by a vertical moving device 17 consisting of a hydraulic cylinder to lower the lower wiping roll 3, and the upper frame 8 is lowered by a worm gear type jack. The upper wiping roll 2 is raised by the vertical moving device 16 and the upper and lower wiping rolls 2 and 3 are moved upwardly.
This makes it possible to easily remove the metal strip 1 by reversing the above procedure in a state in which the metal strip 1 does not come into contact with the metal strip 1 on the pass line.

[Effect of idea]

According to the roll wiper according to the present invention as detailed above, the following various effects can be obtained.

Since the small-diameter wiping rolls are used, no hydroplane phenomenon occurs, resulting in excellent wiping properties for rolling oil.Also, the upper and lower wiping rolls are wiped over almost the entire length by their respective back-up roll groups. At the same time, strong pressure is applied, preventing roll deflection.
As a result, the rolling oil can be reliably and uniformly wiped over the entire length of the metal strip.

Since the upper and lower wiping rolls are lined with an elastic body made of a hard polymer material, the metal strip is less likely to be scratched.

A lateral groove is bored in the roll shaft support part of the upper frame to insert the bearing for supporting the shaft of the upper wiping roll, and the lateral groove is used to insert the upper wiping roll into the upper frame. Since the holes are drilled at a position where the roll can be inserted without contacting the up roll group, the upper wiping roll can be attached and removed very easily even though the upper back up roll group is present.

Furthermore, since a vertical groove is formed in the roll shaft support portion of the lower frame, the lower wiping roll can be attached and removed in the same manner.

There is a gap in the upper part of the horizontal groove that allows the upper wiping roll to move to a position where it comes into strong contact with the upper back-up roll group, so the elastic body that is the lining layer of the upper and lower wiping rolls wears out and its diameter becomes smaller. However, by lowering the upper wiping roll and raising the lower wiping roll upward, it is possible to strongly grip the metal strip, which allows the wiping roll to be used for a long period of time, reducing lining costs. I can do it.

[Brief explanation of the drawing]

1 to 10 show one embodiment of a roll wiper according to the present invention, in which FIG. 1 is a front view of the roll wiper, FIG. 2 is a sectional view taken along line A-A in FIG. The figure is a side view of the roll shaft support drilled in the upper frame, FIG. 4 is a front view of the same, FIG. 5 is a side view of the roll shaft support drilled in the lower frame, and FIG. 6 is a side view of the roll shaft support drilled in the upper frame. The same plan view, FIG. 7, and FIG. 8 show a state in which a roll shaft support bearing is inserted into the roll shaft support part drilled in the upper frame, and the upper wiping roll is pushed up by the lower wiping roll to sandwich the metal band. An explanatory diagram, Fig. 9 is a side view showing a state in which the roll shaft support bearing is inserted into the roll shaft support part of the upper frame and a block is installed between them, and Fig. 10 is a side view showing the wiping roll and back-up roll group. A schematic diagram showing the relationship with the metal strip, Figure 11 is a schematic diagram of a case where a conventional roll wiper is installed in a Senji Mill cold rolling mill, and Figure 12 is a schematic diagram showing the relationship with the metal strip.
The figure is a front view of a conventional roll wiper, and FIG. 13 is an explanatory diagram showing roll deflection of a wiping roll in a conventional roll wiper. In the drawings, 1... Metal band, 2, 2'... Upper wiping roll, 3, 3'... Lower wiping roll, 4... Elastic body made of hard polymer material, 5...
Roll shaft, 6... Bearing for shaft support, 7... Bearing for outer cylinder, 8, 8'... Upper frame, 9,
9'...Lower frame, 10...Upper back up roll group, 11...Lower back up roll group, 12...Horizontal groove, 13...Gap, 14...Vertical groove, 15, 15'...Guide rod, 16 ... Vertical movement device, 17 ... Vertical movement device, 17'...
Hydraulic cylinder, 18... Fork end, 19
... Frame of guide rod, 20 ... Block, 21 ... Lid, 22 ... Rolling machine.

Claims (1)

[Claims for Utility Model Registration] 1. A roll wiper in which the roll shafts 5 of small diameter wiping rolls 2 and 3 arranged in two upper and lower stages are supported by an upper frame 8 and a lower frame 9, respectively. The outer peripheral surfaces of the wiping rolls 2 and 3 are each lined with an elastic body 4 made of a hard polymer material, and shaft support bearings 6 are attached to both ends of the roll shaft 5. An upper back-up roll group 10 is rotatably fixed in the roll axis direction, and a lateral groove 12 is provided in which the upper wiping roll 2 is inserted into the roll shaft support portion without coming into contact with the upper back-up roll group 10. A gap 13 having a sufficient height to push up the outer peripheral surface of the upper wiping roll 2 until it is pressed by the upper back-up roll group 10 is bored in the upper part of the lateral groove 12, and the lower frame 9 has a roll shaft. A lower back-up roll group 11 is rotatably fixed in the direction, and a lower wiping roll 3
A vertical groove 14 into which a shaft support bearing 6 is inserted is bored into the roll shaft support portion until it contacts the lower back-up roll group 11, and the upper and lower frames 8 and 9
A roll wiper characterized in that vertically moving devices 16 and 17 are provided respectively in the roll wiper. 2 The hardness of the elastic body 4 made of hard polymer material is
The roll wiper according to claim 1 of the utility model registration, which has a Hs in the range of 60 to 90. 3. The roll wiper according to claim 1 or 2, wherein the diameters of the upper and lower wiping rolls 2, 3 are in the range of 30 to 100 mm. 4. Utility model registration claim 1, in which an outer cylinder bearing 7 for rotatably pivoting the outer cylinders of the upper and lower wiping rolls 2 is attached to the roll shaft 5 of the upper and lower wiping rolls 2 and 3. The roll wiper according to any one of items 3 to 3.