JPH0261323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to rolling equipment, and in particular to a horizontal rolling mill that requires a lot of roll rearranging work due to size changes, and that is equipped with a pair of rolls that are arranged horizontally side by side. The present invention relates to a roll changing device such as a billet rolling mill in which vertical rolling mills each having a pair of rolls are arranged in series.

Generally, the rolls in billet rolling mills etc.
They are rearranged by being pulled out and inserted along the axial direction. In the case of a horizontal roll rolling mill equipped with horizontal rolls, the work of displacing and rearranging the rolls in the horizontal direction can be performed without using a special crane, and moreover, it is possible to perform the work of displacing the rolls in the horizontal direction and rearranging them without using a special crane or the like. It is also possible to perform simultaneous displacement and rearrangement, and the time required for the rearrangement work is relatively short. On the other hand, in the case of a vertical roll rolling mill equipped with vertical rolls, the rolls must be reassembled by pulling them out vertically upwards or inserting them vertically upwards, which requires special equipment such as cranes or lifts. Moreover, it was difficult to rearrange the two rolls in a pair at the same time, and the working time required was extremely long compared to that of a horizontal roll mill.

This invention was made in consideration of the above circumstances, and by rotating the vertical roll mill by 90 degrees and changing the state so that the vertical rolls are horizontal, it is possible to rearrange the rolls in the vertical roll mill.
It is an object of the present invention to provide a roll changing device for a rolling mill that can perform roll changing in a short time without requiring a crane or the like like that of a horizontal roll rolling mill.

The present invention will be described below based on an illustrated embodiment.

FIG. 1 shows a roll changing device 1 of a vertical roll rolling mill that forms only one groove, and a roll changing device 2 of a horizontal roll rolling mill that also forms only one groove. The plane of the entire roll changing equipment installed in series one by one is shown, and the former roll changing device 1 is the roll changing device 3 of the rolling mill according to the present invention.
is provided. The latter roll changing device 2 is similar to the existing one.

Regarding the entire roll changing equipment shown in Fig. 1, the rolling line (not shown) located on the right side of the figure
It is configured as an off-line system separated from the rolling line, and is connected to the rolling line by a first rail 4. The rolling line includes a continuous rolling mill 5 as shown in the figure.
Something similar is provided. This continuous rolling mill 5 is based on Japanese Patent Laid-Open No. 57-39014 filed by one of the present applicants, and is based on a first carriage 6 that can run on a first rail 4. Two horizontal roll mills 7 and two vertical roll mills 8 are alternately installed in a straight line along the vertical direction in the figure on a trolley 6. A device similar to this continuous rolling mill 5 is incorporated into a rolling line together with the first cart 6 as its base, and for example, one rolling mill in the continuous rolling mill 5 incorporated into the rolling line. When a failure occurs, the continuous rolling mill 5 is moved along with the cart 6 on the first rail 4,
A similar continuous rolling mill 5, which had been waiting separately, was installed in the rolling line together with the trolley 6 as its base. There is. In this way, replacing the entire continuous rolling mill 5 equipped with four rolling mills at once makes the replacement work more efficient and reduces the downtime of the rolling line. This is extremely advantageous.

A second rail 9 extending in the vertical direction in FIG. 1 is installed in the roll changing facility, and a second truck 10 is movably mounted on this rail 9. The above-mentioned first cart 6 is adapted to be transferred onto this cart 10 from an extension of the first rail 4 with the continuous rolling mill 5 placed thereon.

By the way, the horizontal roll rolling mill 7 in the continuous rolling mill 5 has a structure in which a pair of upper and lower horizontal rolls 12, 12 are assembled into the housing 11 so as to be inserted from the horizontal direction. In this case, the right end of the horizontal rolls 12, 12 in FIG. , 12 can be pulled out from the housing 11 and inserted into the housing 11 all at the same time. Guides 13 for the rolled material are installed on the outlet side and the inlet side of the rolled material between the pair of rolls 12, 12, respectively, so as to be inserted from the upper and lower horizontal directions in FIG. On the other hand, the vertical roll rolling mill 8 has a configuration in which the above-mentioned horizontal roll rolling mill 7 is laid down at exactly 90 degrees, and a pair of left and right vertical rolls 15, 15 and a billet are passed through the housing 14 of the vertical roll rolling mill 8. A guide 16 having a square hole is assembled. In this case, the upper ends of the vertical rolls 15, 15 serve as connection ends that are connected to the roll drive motor via a speed reduction mechanism (both not shown).

In the roll changing equipment, the aforementioned four roll changing devices 1, 1, 2, and 2 are arranged side by side on the left side of the second rail 9 in FIG.

The four rolling mills 7, 7, 8, 8 are placed on the second trolley 10 along with the first trolley 6 which serves as a base thereof, and run along the second rail 9 together with the second trolley 10. They are moved so that they are positioned on the right side of the corresponding roll changing devices 1, 1, 2, and 2 in FIG. 1, respectively. When the corresponding vertical roll rolling mills 8, 8 are located on the right side of the roll changing devices 1, 1 of the vertical roll mill, they are connected to the cylinders 18, 18 of the push pullers 17, 17 (rolling mill transfer mechanism).
18, it is pushed toward the corresponding roll changing device 1, 1 and removed from the first truck 6.
Each roll changing device 1 performs the work of changing the rolls 15 and guides 16 for the vertical roll rolling mill 8 that have been pushed by the corresponding push puller 17. On the other hand, the roll changing devices 2, 2 of the horizontal roll rolling mill operate when the first cart 6 is moved to the position shown in FIG. 1 after the vertical roll rolling mills 8, 8 are removed. Roll 1 for the corresponding horizontal roll mill 7 on the first trolley 6 and on the right side
2 and the guide 13.

First, the roll changing device 2 of the horizontal roll rolling mill will be briefly described.

This roll changing device 2 first removes the front and rear guides 13 with the horizontal roll rolling mill 7 positioned on the first truck, and then
Pull out roll 12 of books at the same time. The guide 13 is removed and removed by first, second, and third guide changing mechanisms 19, 20, and 21. These have rails 19a, 20a, and 21a that extend above the first truck 6, respectively, and a truck 19b that moves along the left and right direction in FIG.
20b and 21b are used as the base. Each trolley 19
b, 20b, 21b are empty first guide changing parts 19c, 20c, 2 which pull out the guide 13 of the horizontal roll rolling mill 7 by the operation of the cylinder.
1c, and second guide recombination parts 19d, 20d, 2 in which the new guide 13 is inserted and assembled into the horizontal roll rolling mill 7 by the operation of the cylinder.
1d is provided. Note that the second guide changing mechanism 20 is configured to replace the guides 1 at mutually opposing portions between the two horizontal roll rolling mills 7, 7.
3 and 13 are performed at the same time.

Therefore, when removing each guide 13 from the horizontal roll rolling mill 7, each carriage 19b, 20b, 21b is moved so that each first guide reassembled portion 19c, 20c, 21c faces the guide 13. moves, and the first guide recombination parts 19c, 20
c, 21c pull out the corresponding guide 13.

When pulling out the horizontal rolls 12 thereafter, the horizontal movement cylinders 2 of each roll changing device 2
2 and 23 extend to the right in FIG. 1, and their tips grip the upper and lower horizontal rolls 12 of the corresponding horizontal roll rolling mill 7. Then, horizontal motion cylinder 2
2 and 23 retract to the left in FIG. Slide it to the left in Figure 1. The left sides of the straight rails 24 and 25 extend onto moving tables 26 and 27, respectively, and the pulled-out horizontal roll 12 is slid onto these moving tables 26 and 27, and is transferred to the horizontal roll rolling machine 7. It is placed there in the same orientation as it was assembled, that is, with the connecting end facing to the right in Figure 1.

In this way, the guide 13 and the horizontal roll 12
After being pulled out, a new horizontal roll 12 and guide 13 are assembled.

When assembling the new horizontal roll 12,
First, each moving table 26, 27 is moved upward in the figure from the state shown in FIG. Horizontal roll 12 is rail 2
It is located on the extension line of 4 and 25. Then, the horizontal cylinders 22 and 23 extend again, and their tips push a new pair of upper and lower horizontal rolls 12 to the right in FIG. 1, and insert them simultaneously into the horizontal roll rolling mill 7. Assemble.

When assembling a new guide 13 after that, first, the bases 19a, 20 of the first, second, and third guide changing mechanisms 19, 20, 21 described above are assembled.
a, 21a slide, and their second recombinant parts 19d, 20d, 21d face the attachment point of the guide 13 in the horizontal roll mill 7. Then, each second recombination section 19d, 20d,
21d is a new guide 13 provided in advance.
is pushed into the horizontal roll rolling mill 7 and assembled there.

In this way, the roll changing device 2 of the horizontal roll rolling mill changes the rolls 12 and guides 13 for the horizontal roll rolling mill 7 on the first carriage 6.

Next, a roll changing device 1 for a vertical roll mill equipped with a rotating device 3 for changing rolls, which is essential to the present invention, will be described.

In this roll changing device 1, the vertical roll rolling mill 8, which has been pushed by the push puller 17 and removed from the first carriage 6, is moved into the roll changing turning device 3. Straight rail 28 for sliding of the roll rolling mill 8 that continues up to the top of the carriage 6 of 1
is provided. The roll changing turning device 3 is
It has a cylindrical rotating body 29 whose axis is horizontal so as to follow the rolling line, and flanges 30, 30 are provided on both outer peripheries of this rotating body 29. These flange parts 30 are rotatably supported by a total of four sets of rotation support parts 32 provided on the base 31. In FIG. 4, which is a plan view of the roll changing rotation device 3, the two sets of rotation support parts 32 on the right side each have two support rollers 33, as shown in FIG. The supporting rollers 33 are configured to sandwich both sides of the flange portion 30 of the corresponding rotary body 29 to rotatably support it, and the two sets of rotary support portions 32 on the left side in the same figure also support the flange portion 30 of the corresponding rotating body 29. 2 as shown in Figure 5
The rotating body 29 is supported by two supporting rollers 33.
The flange portion 30 is rotatably supported.

The support roller 33 in each rotation support part 32 is
Each is rotatably attached to a shaft 34 on the base 31 side via a bearing 35. Fourth
The shafts 34 in the two sets of rotational supports 32 on the left side of the figure are one common shaft, and one end of the shaft 34 is connected to the rotating shaft of a motor 37 via a worm gear 36. is called a drive shaft. Therefore, hereinafter, this shaft 34 will be referred to as a drive shaft. This drive shaft 34 includes a drive gear 38 facing both flanges 30, 30 of the rotating body 29,
38 is fitted. A gear 39 that meshes with a corresponding drive gear 38 is provided on the outer periphery of each flange portion 30, so that the rotating body 29 is rotated by the motor 37. In this way, a series of mechanisms including the gear 39 on the rotating body 29 side and the motor 37 constitute a drive mechanism 40 for the rotating body 29 .

Inside the cylindrical rotating body 29, a rail portion 41 is provided which is continuous with the linear rail 28 when the rotary body 29 is in a rotating state as shown in FIG. When operated, the vertical roll rolling mill 8 on the first cart 6 slides on the straight rail 28 and the rail portion 41 and is moved into the rotating body 29.

The vertical roll rolling mill 8 has vertical rolls 15 and guides 1 in its housing 14, as shown by solid lines in FIG.
6 remains attached to the rotating body 29. Hanging ears 43 having hanging holes 42 are provided at four locations on the left side of the housing 14 in FIG. A connecting mechanism 44 corresponding to the above is provided. Each coupling mechanism 44 has a pair of hanging pieces 45, and the housing 14 is attached to the rotating body 2.
When pushed into 9, these hanging pieces 45, 45
Corresponding hanging ears 43 naturally fit between the two. On one side of the pair of hanging pieces 45 is a cylinder 4 that allows the connecting pin 46 to expand and contract.
7 is provided. The connecting pin 46 is guided in a tight fit to a guide pin 48 in the cylinder 47 and the connecting pin 46 is guided therein in a tight fit.
A ring-shaped piston 49 that fits tightly into the inner circumferential surface of the cylinder 47 is connected to the lower base end of the cylinder 47 in FIG. The tip of the connecting pin 46 is closed, and a first pressure receiving chamber _R1 is formed inside thereof. Further, a connecting pin 46 is tightly fitted into the inner circumferential portion of the cylinder 47 at the upper side in FIG _. It is formed.

Fluid pressure is introduced into the first pressure receiving chamber _R1 from the outside through a first passage _L1 formed inside the guide pin 48, and into the second pressure receiving chamber _R2 ,
A second passage L ₂ formed in the peripheral wall of the cylinder 47
Fluid pressure is introduced from the outside through. In the former case, the connecting pin 46 extends as shown in FIG. 7, passes from one hanging piece 45 side into the hanging hole 42 of the hanging ear 43, and fits into the other hanging piece 45 side. On the other hand, in the latter case, the connecting pin 46 retracts into the cylinder 47. Therefore, in the former case, the hanging ears 43 of the vertical roll rolling mill 8 are connected to the hanging pieces 45 of the rotating body 29, and in the latter case, the connection is released.

By the way, the drive mechanism 40 rotates the rotating body 29.
It is designed to rotate within a range of 90 degrees, and the second
The position of the rotating body 29 in the state shown in the figure is defined as the leftward rotation limit position, and the position shown in FIG. 3, which is rotated 90 degrees clockwise from this position, is defined as the rightward rotation limit position. When the rotating body 29 rotates, a guide roller 50 is provided to guide the side surface of the rotating body 29.
This prevents the rotary body 29, in particular, from wobbling laterally.

After the hanging lug 43 of the vertical roll rolling mill 8 is connected to the rotating body 29 side by the connecting mechanism 44, when the rotating body 29 is rotated 90 degrees as shown in FIG.
The vertical roll rolling mill 8 is suspended from the hanging piece 45 of the rotary body 29, so that it has the same appearance as the horizontal roll rolling mill 7 just described above, so that the upper connecting end of the vertical roll 15 is Like the roll 12, it is oriented toward the rolling line side (right side).

In this way, the present roll recombination turning device 3 rotates the vertical roll rolling mill 8 by 90 degrees, and the vertical roll 1
5 is in a horizontal state, and the vertical roll rolling mill 8 itself has the same appearance as the horizontal roll rolling mill 7.

After that, for the vertical roll rolling mill 8, which has a similar configuration to the horizontal roll rolling mill 7,
The guides 16 and rolls 15 are replaced in the same manner as in the horizontal roll rolling mill 7 described above.

That is, for the vertical roll rolling mill 8 in the rotating body 29, those guides 16 are first, second, and third guide sets similar to those in the roll changing device 2 of the horizontal roll rolling mill described above. replacement mechanism 19,
20 and 21, the guides are removed to their first guide recombination parts 19c, 20c, and 21c. Then, a horizontal motion cylinder 2 similar to that in the roll changing device 2 of the horizontal roll rolling mill described above is installed.
2, 23 (first vertical roll transfer mechanism),
Two upper and lower pairs of vertical rolls 15 are pulled out at the same time, and these pulled out upper and lower pairs of vertical rolls 15 are transferred to the horizontal motion cylinder 2, similar to the roll changing device 2 of the horizontal roll rolling mill described above.
It is slid onto moving tables 26 and 27 (second vertical roll transfer mechanism) which are movable in a horizontal direction perpendicular to the operating direction of rollers 2 and 23. As a result, the vertical roll 15 that has been pulled out is placed on the moving tables 26 and 27 with the connected end facing right, similar to the horizontal roll 12 that has been pulled out by the roll changing device 2 of the horizontal roll rolling mill. It will be posted.

Thereafter, the movable tables 26 and 27 slide, and a new pair of upper and lower vertical rolls 15, which had been previously placed on them in a horizontal state, are pushed by the corresponding horizontal movement cylinders 22 and 23 and rotated. It is assembled by being inserted into the vertical roll rolling mill 8 in the body 29. Then, the first, second and third guide changing mechanisms 19, 20,
21, the second guide recombination part 19 therein
The new guides 16 previously provided at d, 20d, and 21d are inserted and assembled into the corresponding vertical roll rolling mills 8.

In this way, the vertical roll rolling mill 8 inside the rotating body 29
The vertical rolls 15 and guides 16 are reassembled on the horizontal roll rolling mill 7 on the first cart 6.
Similarly to the rearrangement of the horizontal roll 12 and guide 13,
It is done in a relatively short time.

After the rearrangement work for the vertical roll rolling mill 8 is completed, the rotating body 29 is rotated 90 degrees counterclockwise again to the state shown in FIG. 2, and the vertical roll rolling mill 8 is returned to its normal configuration. and return it. Then, the coupling mechanism 44 in the rotating body 29 is actuated so that it releases the coupling to the hanging lug 43 of the vertical roll mill 8 and the cylinder 18 of the push puller 17.
is extended and its tip is connected to the vertical roll rolling mill 8. Then, the cylinder 18 of this push puller 17 retracts, and the vertical roll rolling mill 8 is pulled out from inside the rotating body 29, and it is moved to the first carriage 6.
It is set in the upper predetermined position.

As described above, the rearrangement of rolls and guides for the total of four rolling mills 7, 7, 8, and 8 on the first truck 6 is completed.

As explained in detail above, the roll changing device for a rolling mill according to the present invention houses a vertical roll rolling mill inside and rotates a rotating body connected by a connecting mechanism using a drive mechanism, thereby converting the rolling mill into a vertical rolling mill. The configuration is such that the rolls can be rearranged horizontally, and in particular, there is a rolling mill transfer mechanism for horizontally moving the vertical roll rolling mill to push it into and pull it out from the rotating body, and a rolling mill transport mechanism that horizontally moves the vertical roll rolling mill to push and pull out the old and new vertical rolls to be rearranged. Since the first and second vertical roll transfer mechanisms are provided for movement, the vertical rolls can be rearranged simply by horizontally moving the vertical roll rolling mill and the vertical rolls using the respective transfer mechanisms. It is a thing,
For this reason, the use of a crane or the like is not necessary, as is the case with horizontal roll reshuffling in a horizontal roll rolling mill, and as a result, the reshuffling work can be done easily, quickly, and safely. be.

In addition, in the roll changing device of the present invention, when the rotating body is rotated to make the vertical rolls horizontal, the connecting end of the upper end of the vertical rolls faces the rolling line side. When applied to a rolling line equipped with both roll rolling mills, the vertical rolls are oriented in the same direction as the horizontal rolls, so these rolls can be transported and old rolls removed from the rolling mill can be ground. This has the advantage that it is possible to handle vertical rolls and horizontal rolls in exactly the same way, which is extremely convenient.

In addition, in order to rotate the rotating body in the direction in which the upper end of the vertical roll faces the rolling line side, a connection mechanism is adopted in which the vertical roll rolling machine is suspended and connected to the rotating body, as in the above embodiment. It is advantageous to do so.

Furthermore, the work of removing the vertical roll that has been pulled out onto the movable table serving as the second vertical roll transfer mechanism and the work of placing a new vertical roll thereon can be carried out using, for example, a crane. These operations can be carried out as appropriate, but they can be carried out freely at any time regardless of the roll changing operation, and there is no need to stop the rolling line at that time.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of the entire roll changing equipment, Fig. 2 is a side view of the roll changing turning device, and Fig. 3 shows the roll assembly in a state rotated by 90 degrees. 4 is a plan view of the rotation device for changing rolls, FIGS. 5 and 6 are enlarged explanatory views of the rotating support portion of the rotating body, and FIG. 7 is a connection in the rotating body. FIG. 3 is an enlarged vertical cross-sectional view of the mechanism. 1... Roll rearranging device, 3... Roll rearranging and turning device, 8... Vertical roll rolling mill, 15... Vertical roll, 17... Push puller (rolling mill transfer mechanism),
22, 23...Horizontal movement cylinder (first vertical roll transfer mechanism), 26, 27...Moving table (second
vertical roll transfer mechanism, 29...rotating body, 40...
Drive mechanism, 44... connection mechanism.

Claims (1)

[Scope of Claims] 1. A roll changing device installed on the side of a rolling line equipped with a vertical roll rolling mill, for changing the vertical rolls assembled in the vertical roll rolling mill, comprising: , a cylindrical rotating body in which the vertical roll rolling mill can be housed from the side and rotatable about a horizontal axis along the rolling line; a drive mechanism for rotating the vertical rolls of the housed vertical roll rolling mill 90 degrees in a direction toward the rolling line side to make the vertical rolls horizontal, and rotating 90 degrees in the opposite direction to return the vertical rolls; a rolling mill transfer mechanism for pushing the vertical roll rolling mill into the rotating body by horizontally moving it from the rolling line and pulling it out from there; and a rolling mill transfer mechanism for pushing the vertical roll rolling mill into the rotating body by the rolling mill transferring mechanism. a coupling mechanism for coupling to a rotating body; and a vertical roll rolling machine provided on a side opposite to the rolling line of the rotating body, and connected to the rotating body by the coupling mechanism and rotated together with the rotating body. a first vertical roll transfer mechanism for pulling out the vertical roll in the horizontal direction and guiding it to the outside of the rotating body, and pushing another vertical roll into the rotating body and assembling it in the vertical roll rolling mill; and the first vertical roll. It is provided between the transfer mechanism and the rotating body, and the vertical rolls that have been pulled out and other vertical rolls to be assembled are placed side by side, and the vertical rolls are aligned in the operating direction of the first vertical roll transfer mechanism. 1. A roll changing device for a rolling mill, comprising a second vertical roll transfer mechanism for moving in orthogonal horizontal directions.