JPS6120374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a presser roll changing device for a strip guiding device installed on the entry side of a rolling mill.

Strip guiding devices are generally used as devices for preventing strip meandering and applying back tension, and roll type and stator type (woodblock type) types of these devices have been known. However, when applying high buck tension, scratches on the strip surface (in the case of the wood block type, iron particles stuck in the wood will damage the strip surface when the strip is clamped), wear of the guide (comparing the roll type and the wood block type), The wood block type wears out faster and needs to be replaced more frequently), and the roll type is preferable from the viewpoint of strip leveling effect.

However, compared to replacing the wood of the statescar type, replacing the presser roll of a roll type requires loosening the tightening bolt of bearing 1 because there is no special mechanical device for replacing the presser roll as shown in Figure 1. Therefore, the presser rolls 2 had to be replaced one by one. However, the space inside the rolling mill is small,
Moreover, since the footing is poor and the weight of the presser roll 2 is heavy, it is very difficult to replace the presser roll, which not only requires a great deal of labor and time but also involves great danger.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and utilizes a rail such as a work roll changing rail in order to shorten presser roll replacement time, save labor, and improve safety. It is an object of the present invention to provide a presser roll recombining device for a strip guide device, which employs a recombining cart and can quickly and easily pull out the presser rolls out of the machine.

The present invention will be described below with reference to the embodiments shown in the drawings. In FIGS. 2 to 6, reference numeral 3 denotes a fixed frame inside the housing, on which a cylinder 6 connected to a movable frame 4 is attached. Reference numeral 7 denotes a cylinder attached to the top of the movable frame 4, which allows the top frame 8 to move up and down. Top frame 8 has upper presser roll 9
a, 9b1, 9b2, and 9b3 are supported so as to be movable toward the center of the mill via top carriages 11a and 11b, which are divided into two, respectively. 10a
1, 10a2 and 10b1, 10b2, 10b3
are lower press rolls supported on the bottom carriages 12a and 12b, which are divided into two, respectively, and are provided below the clampable positions of the upper press rolls 9a, 9b1, 9b2, and 9b3, respectively.
Further, the bottom carriages 12a and 12b are provided with running wheels 13a1, 13a2 and 13b1, 13b, respectively.
2, it can run on support rails 14 and intermediate rails 15. Reference numeral 16 denotes a presser roll recombination cart that can be moved on the work roll recombination rails 17 via wheels 18.

19 is a cylinder attached to the moving frame 4, and the cylinder 19 is connected to the support rail 14 guided by the frame 4, and the cylinder 19 is connected to the support rail 14 guided by the frame 4.
4 can be moved up and down. Reference numeral 20 denotes a cylinder attached to the top frame 8. A spring 21 is built into the cylinder 20, and the spring 21 pushes the top carriage 11 through the carriage support 22.
a and 11b are constantly pressed against the top frame 8 during rolling. 23a and 23b are stools for rearrangement.

Next, the operation of the embodiment configured as above will be explained. When the rolling operation is completed in FIGS. 2 to 7, the cylinder 6 attached to the fixed frame 3 inside the housing of the rolling mill retracts the entire strip guide device toward the entry side using the fixed frame 3 as a guide. Also, the cylinder 7 attached to the movable frame 4 moves the upper presser rolls 9a, 9 in a clamped state via the top frame 8.
Lift up b1, 9b2, and 9b3. Next, after a work roll (not shown is a back-up roll) is pulled out of the rolling mill, the work roll changing rail 17 is used to push the presser roll changing cart 16 into the rolling mill.

Next, as shown in Figure 3, presser roll replacement stool 2
3a, 23b with upper press rolls 9a and 9b1, 9
Top carriage 1 divided into two parts b2 and 9b3
1a and 11b and lower presser rolls 10a1, 10
It is set between the two divided bottom carriages 12a and 12b of a2, 10b1, 10b2, and 10b3, and the lower presser rolls 10a1 and 10a are moved through the support rail 14 guided by the moving frame 4 by a cylinder 19 attached to the moving frame 4.
2 and 10b1, 10b2, and 10b3 are lifted up.

During rolling, the bottom carriages 12a and 12b are supported by the moving frame 4 and supported by the support rails 14.
and running wheels 13a1, 13a2 and 13b1,
13b2, so that no clamping force is applied directly to the cylinder 19. In addition, the upper presser rolls 9a, 9b1, 9b2, 9b3 push down the cylinder 20 attached to the top frame 8, thereby pressing down the recombinant stool 23a set on the bottom carriages 12a and 12b.
and top carriages 11a and 11 on 23b.
Supported via b. Also, a spring 21 built into the cylinder 20 moves the top carriage 1 through the carriage support 22 during rolling.
1a and 11b are always pressed against the top frame 8, and the clamping force is not directly applied to the cylinder 20 as with the bottom.

That is, the upper presser rolls 9a, 9b1, 9b2, 9b3 of the strip guiding device during rolling are moved by the spring 21 built in the cylinder 20 attached to the top frame 8 as shown in FIG.
Since the top carriages 11a and 11b are constantly pressed against the top frame 8 through the carriage support 22 during rolling, it is possible to transmit the clamping force from the cylinder 7 to the strip.

Also, upper presser rolls 9a and 9b1, 9b2, 9
When changing the rolls of b3, by pushing down the cylinder 20 attached to the top frame 8, the built-in spring 21 is compressed, creating a gap between the top frame 8 and the top carriages 11a and 11b, as shown in Fig. 6. . At this time, the upper presser rolls 9a, 9b1, 9b2, 9b3 are
It is supported via top carriages 11a and 11b on convertible stools 23a and 23b set on bottom carriages 12a and 12b. The carriage support 22 also serves as a guide for the T-beams on the frames of the top carriages 11a and 11b.

Next, the support rail 14 and the presser roll rearrangement trolley 16
The intermediate rail 15 is set in between. After the setting of the intermediate rail 15 is completed, as shown in FIG.
0a2 assembly, bottom carriage 12
Running wheels 13a1, 13a2 attached to a
Pull it out to the center of the mill through. When the assembly of the upper and lower presser rolls 9a and 10a1, 10a2 is moved to the center of the mill, that is, on the presser roll recombining cart 16, the intermediate rail 15 is removed, and the presser roll recombining cart 16, which runs on wheels 18, is used to reassemble the work rolls on the work side. Pull out the trolley (not shown).

Next, as shown in Fig. 5, the presser roll rearrangement cart 1 is
6 into the rolling mill, set the intermediate rail 15 again as described above, and press the entry side upper and lower presser rolls 9b.
1,9b2,9b3 and 10b1,10b2,1
0b3 assembly, traveling wheels 13b1,
It is pulled out onto the presser roll changing cart 16 via 13b2, and finally out of the rolling mill. Also, in the case of integration, it is possible to perform the operation completely opposite to the above-mentioned disassembly. Note that the present invention is not limited to the embodiments described above; for example, it is possible to install a new rail in place of the work roll rearrangement rail, or to rearrange the presser rolls into upper and lower units instead of upper and lower assemblies. It goes without saying that it is optional that the present invention can be adopted for other types of devices (state car type, etc.) instead of the roll type, and further changes can be made within the scope of the gist of the present invention. .

As explained in detail above, the present invention includes a presser roll recombining cart that can be moved on a rail so as to be pushed into the machine and pulled out from the machine, and a presser roll recombining cart that is connected to the upper part of the presser roll recombinant cart and that is detachable. a support rail that can be connected to the intermediate rail and is provided on a movable frame that has elevating means; a lower presser roll that is movable on the support rail; a presser roll attachment/detachment mechanism having an upper presser roll movable on the support rail via a stool; and a cylinder with a built-in spring attached to the top frame for clamping and unclamping the upper presser roll to the top frame. The structure is extremely simple, the presser roll can be quickly pulled out of the machine, the presser roll can be attached and detached without the need for human effort, and it does not require a trolley or a trolley to change the presser rolls. By using the rail in combination, it is possible to shorten the presser roll replacement time, save labor, and improve safety. I can do it. Furthermore, the device of the present invention does not require a special and complicated structure compared to the conventional strip guiding device, and has the advantage that the conventional device can be easily modified.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conventional strip guide device, and FIGS. 2, 3, 4, and 5 are views of a presser roll changing device of a strip guide device according to an embodiment of the present invention, respectively. A front view showing different operating states, FIG. 6 is a side sectional view of FIG. 2, a rearranged state diagram, and FIG. 7 is a rolling state diagram of the same. Explanation of the main parts of the diagram, 4...Moving frame, 9
a, 9b1, 9b2, 9b3...upper presser roll,
10a1, 10a2, 10b1, 10b2, 10
b3...Lower presser roll, 11a, 11b...Top carriage (presser roll attachment/detachment mechanism), 12a,
12b...Bottom carriage (presser roll attachment/detachment mechanism), 13a1, 13a2, 13b1, 13b2
...Traveling wheels, 14...Support rails, 15...
Intermediate rail, 16... Presser roll rearrangement trolley, 17
...Work roll rearrangement rail, 23a, 23b
...Stool for rearrangement, 18...Wheel, 20...Cylinder, 21...Spring, 22...Carriage support.

Claims (1)

[Claims] 1. In the strip guiding device, a presser roll recombining cart is provided so as to be movable so as to be pushed into the machine and pulled out from the machine on a rail extending toward the inside of the machine, and a presser roll recombining cart connected to the upper part of the presser roll recombining cart, A removably provided intermediate rail, a support rail connectable to the intermediate rail and provided on a movable frame having lifting means, a lower presser roll movable on the support rail, and the lower presser. an upper presser roll provided on the roll so as to be movable on the support rail via a recombination stool;
A presser roll changing device for a strip guide device, comprising a presser roll attaching/detaching mechanism having a cylinder with a built-in spring attached to the top frame for clamping and unclamping the presser roll to and from the top frame.