JPH0739004B2 - Rolling mill roll shop - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention integrates and automates the functions of a rolling mill that operates at a high rate to a roll repairing device to perform smooth roll feeding, thereby increasing the maximum rolling mill operating rate. It relates to a rolling mill roll shop to compensate.

(Prior art) Rolls of rolling mills are replaced with new rolls that have been refurbished and repaired when the surface is worn or when rolling different materials, etc. , The frequency has increased remarkably. Therefore, appropriate rolls must be provided in real time quickly, and there is an increasing demand for improving the function of the roll shop for regenerating and storing the replaced old rolls.

A conventional roll shop has a roll storage (buffer) for preparing and storing rolls, which is usually arranged as a shared buffer between a rolling mill and a repairing device such as grinding.

In this roll storage area, used rolls (rolls with chocks), rolls with chocks removed and waiting for repair (bare rolls), and further rolls waiting for use after repairing are mixedly arranged.

However, in this method, the rolling mill system and the repairing system simultaneously move the rolls in and out around the same storage space, so that mutual interference on the transport surface is unavoidable. In other words, when an emergency roll change such as an accident occurs on the rolling mill side, first, the high operation of the rolling mill is prioritized.Therefore, the used roll is immediately removed and arranged, and a new roll is taken out and set on the rolling mill. Due to these treatments, the roll transfer device frequently moves around the storage area, during which the supply of rolls to the repairing side such as grinding is sacrificed.

In other words, it does not become a roll shop with high operation as a whole, and it becomes an obstacle to automation, and in addition, a large number of grinders, chock attachment / detachment devices, etc. must be prepared.

There is a proposal of a roll shop aiming at automation by improving such a conventional example. For example, Japanese Patent Laid-Open No. 50-146558 discloses a roll changing device, a chock changing device, a roll yard, a roll grinding device, and a surface processing device, and roll transfer means are centrally arranged in these device yard in the order of processes, A roll shop provided with a control mechanism for the transfer is disclosed. And, in the invention described in the publication, two sets of the relocation preparation set 3 and the other yard 7a are arranged as the roll yard, which is considerably improved, but the used roll taken out from the rolling mill is reassembled. Instead of going to the preparatory set, it is placed on the transfer means and transferred to the chock changing device, so this transfer means becomes a bottleneck, and the used rolls cannot be handled quickly,
The new roll of the rearrangement preparation set cannot be set on the rolling mill. In other words, it interferes with the high operation of the rolling mill. Further, as another prior example, there is JP-A-63-84705, in which a track for loading / unloading rolls to / from a rolling yard and an automatic roll multistage warehouse (roll yard) are provided at a central position orthogonal to the track. , A roll shop in which a roll chock remover, a grinder, and an electric discharge machine are arranged in parallel, and a roll is conveyed to each of these devices by an NC crane is disclosed. That is, the rolls taken out from the rolling mill have a system that once goes out to the roll shop outside (outside the system), and a common roll storage place is arranged at the entrance side of the roll shop, and the rolls taken out from the rolling mill are First, the chock is removed via the chock attachment / detachment device, and it becomes a bare roll and is stored in the roll storage area. Therefore, the conveyance for supplying the used rolls to the chock attachment / detachment device becomes a bottleneck, affecting the separation of the used rolls, making it impossible to perform rapid roll exchange, and during roll exchange (removing the new roll from the storage place). However, there is a high possibility that the transfer means will be crossed and the grinding side will be damaged, and in particular, it is expected that the influence will be great when the emergency roll is replaced.

(Problems to be Solved by the Invention) The present invention is to solve the above-mentioned problems,
It provides integrated automation between the rolling mill and the roll repair device, and provides an optimal layout according to the prioritized functions, providing a roll shop where each of these functions can operate smoothly. For example, the roll shop of the present invention quickly pulls out and rolls used rolls to the rolling mill, and at the same time quickly "takes out" new rolls and "sets" them into the rolling mill. Processing and compensating the maximum operating rate of the rolling mill, while regarding the repair such as grinding of rolls, the maximum operating rate of the repairing device is compensated, and there is no interference between these two functions of each. Function smoothly, whether it is a regular shuffle or an emergency shuffle, and its function is basically unmanned. An object of the present invention is to so.

(Means for Solving the Problems) In order to achieve the above object, the present invention has the following structures.

(1) Close to the rolling mill line, roll changing device 3,
In a roll shop equipped with a chock changing cart 5, a chock attaching / detaching device 7, a roll grinding device 14 and a roll transfer means for moving between these devices, with a chock repaired / prepared in a usable state adjacent to a rolling mill line. New roll,
And a roll storage 4 with chocks for storing the old rolls with chocks pulled out from the rolling mill, and an old bare roll and roll repair device with the chocks removed from the old rolls in the vicinity of a roll repair device such as a roll grinder. In the rolling mill, a bare roll yard 8 for placing the repaired new bare roll is placed, and a roll chock attachment / detachment device 7 is interposed between the bare roll yard 8 and the chock-equipped roll yard 4. Roll shop.

(2) In the vicinity of the rolling mill line, the roll changing device 3,
In a roll shop equipped with a chock changing cart 5, a chock attaching / detaching device 7, a roll grinding device 14 and a roll transfer means for moving between these devices, with a chock repaired / prepared in a usable state adjacent to a rolling mill line. New roll,
And a roll storage 4 with chocks for storing the old rolls with chocks pulled out from the rolling mill, and an old bare roll and roll repair device with the chocks removed from the old rolls in the vicinity of a roll repair device such as a roll grinder. In the above-mentioned rolling mill and chocks, a bare roll yard 8 for placing the repaired new bare roll is placed, and a chock attachment / detachment device 7 is interposed between the bare roll yard 8 and the chock roll yard 4. A running track 6 is laid on the front surface of the roll yard 4, and the roll chock attachment / detachment device 7 is arranged on the extension of the running track 6 so that the chock reassembling trolley 5 can be run on the track 6 and the roll yard 4 with chocks. And the roll chop attachment / detachment device 7 are connected by the chock changing carriage 5, and the chock changing carriage 5 and the bare roll yard 8 are connected by the automatic transfer crane 10. Roll shop of the rolling mill, characterized in that it was.

(3) The roll shop for a rolling mill according to the above item (2), characterized in that the roll exchange carriage 3 and the chock rearrangement carriage 5 are arranged on the track 6.

(4) The roll shop for rolling mills according to the above item (2) or (3), characterized in that one bogie has the functions of the roll exchanging bogie 3 and the chock changing bogie 5.

The present invention will be described in detail below.

FIG. 1 schematically shows a basic configuration of a roll shop of the present invention, in which 1 is a rolling mill, 2 is a roll changing truck, and 3 is a roll changing apparatus (hereinafter referred to as roll changing truck). It is a trolley), and the used roll with chocks (old roll) is pulled out from the rolling mill, and the repaired roll with chocks is set on the rolling mill. Reference numeral 4 denotes a chock-equipped roll yard, which stores the chock-equipped roll pulled out from the rolling mill by the roll exchanging trolley 3 via the roll reassembling trolley 2 and the repaired new roll with chocks. It functions as a roll supply buffer that constantly waits for new roll supply and delivery to repair equipment. Reference numeral 5 denotes a chock changing carriage, which travels on the same track 6 as the roll changing carriage 3 and has a chock-equipped roll yard 4.
The used roll stored in (1) is pulled out and conveyed to the chocks attaching / detaching device 7. Reference numeral 8 denotes a bare (no chock) roll storage area provided in the vicinity of a repair device 9 for grinding the surface of the roll, and the bare roll unchocked by the chock attachment / detachment device 7 is placed on the chock change cart 5. Then, it is moved to the crane transportation position and is loaded into the bare roll storage area 8 by the automatic transfer crane 10. In this case, the roll repair device 9
Used rolls are always stored for 0% operation.

On the other hand, the roll whose surface has been repaired is once carried into the bare roll storage area 8 and then transferred and loaded on the choc changing carriage 5 by the automatic transfer crane 10, and then goes to the chock attaching / detaching device 7 to attach the chock and then The trolley 5 is loaded into the roll storage area 4 with chocks. The arrow in the figure indicates the moving direction of the roll.

As described above, in the present invention, the roll yard is first divided into two, one is the yard 4 for the roll with the chocks, and the other is the yard 8 for the so-called bare roll without the chocks.

Of course, a new repaired roll is placed in the choke roll storage area 4, but at the same time, a used roll pulled out from the rolling mill is also placed. This is placed close to the rolling mill, the used roll pulled out from the rolling mill is immediately stored in this yard, and a new roll is taken out from the yard by its foot and set in the rolling mill.

As a result, the roll changes of the rolling mill can be ensured very quickly without any interference and with maximum availability. On the other hand, the other bare roll yard 8 is arranged in the vicinity of the repair device (grinding machine, etc.) 9, and the treated rolls are discharged from the bare roll yard 8 one after another at a pitch with the maximum capacity of the repair device.
Go to the yard 8 once.

A chock attachment / detachment device 7 is arranged between the bare roll storage 8 and the chock-equipped roll storage 4, taking out the used rolls from the choc-equipped roll storage 4 and removing the chocks.
It is transferred to the bare roll yard, while the repair completed roll placed in the bare roll yard 8 is taken out, and a chock is attached and transferred to the choke roll yard 4. All of these rolls and storage areas are managed by individual codes (addresses), and are efficiently processed according to a required schedule (including rolling) program and according to an emergency program. With such a system, a high degree of automation is achieved, an integrated system of a rolling mill and a roll shop is built, and complete unmanned operation is achieved.

The present invention will be described in detail below based on the embodiments shown in the drawings.

FIG. 2 shows an example of the layout in the roll shop of the present invention, in which 1 is a rolling mill, and in this example, 5 (1a to 1e) tandem rolling mills are shown. Reference numeral 2 is a roll changing device (cart), which is installed corresponding to each rolling mill (1a to 1e) (2a to 2e). Reference numeral 6 denotes a track for carrying a trolley, which is laid adjacent to the roll changing carriage 2 and extended along the roll changing carriage 2. The roll yard with chocks (a storage rack) having a large number of roll accommodating portions is provided along the extension of the track. ) 4 is installed, and each shelf is assigned an address for roll storage management. 7
Is a chock attachment / detachment device, which is arranged in the vicinity of the chock-equipped roll yard 4. 3 is a roll exchange trolley, and 5 is a chock rearrangement trolley, both of which are transported on the track 6. 11a, 11b is orbit 1
It is a push puller truck that runs in parallel with the roll exchange truck 3 and the chock rearrangement truck 5 on 2. A roll repair area 13 is provided with two roll grinding devices 14 (14a is a first grinder device and 14b is a second grinder device) in the present embodiment, and a roll yard 8 for storing bare rolls with the chocks removed is provided. If necessary, a roll cooling device 15 is installed, and addresses are managed for storing these rolls. Reference numeral 10 denotes an automatic transfer crane that sends the track 6 and the roll repair area 13 to carry in and out the roll between the chock changing carriage 5 and the roll grinders 14a and 14b. In the figure, 16 is a roll chock temporary trolley, 17 is another area of the roll shop, and a surface treatment device, other treatment equipment, a roll rack, etc. are arranged in this portion. 18 and 19 are large cranes.

In the example of FIG. 2, the roll exchanging cart 3 and the chock changing cart 5 are made to travel on the same track 6, so if there is some margin in the cycle time, this cart 3, If 5 are combined into one and both functions are combined, the system will be simplified.

FIG. 3 shows another embodiment, in which the chock-equipped roll yard 4 is separated and arranged on the left side of the transport track, so that there are three tracks 12 for carrying the push puller carriages 11a to 11c. It is divided into 12a to 12c, and a track 6b for placing and transporting the chock changing carriage 5 is separately arranged. The other equipment arrangements are the same as in FIG. 1, but the roll chock temporary placement carriage 16 is installed at the end of the transport track 6a.

As described above, the roll shop of this embodiment is arranged in the same building adjacent to the rolling mill device series, and in particular does not hinder the highly efficient operation of the rolling mill, the rolling mill and the roll grinding device ( Between the grinders), in order not to affect the handling time of the roll chock attachment / detachment device connected in series and the automatic conveyance device before and after it, a roll with chocks is placed in front of the rolling mill and further in front of the grinder. A buffer is provided to store as many bare rolls as possible without the chocks.

The roll replacement of the rolling mill is performed in the following procedure. The roll (old roll) of the rolling mill to be replaced is pulled out by the roll changing carriage 2 and placed on the roll changing carriage 3 moved to the corresponding position of the carriage 2. This is performed by pulling in by operating the push puller carriage 11a which has been moved to the rear surface of the roll exchanging carriage 3.

Then, the roll exchanging cart 3 moves to the roll storage area 4 with chocks, and places the rolls on the roll storage area 4 with chocks. Next, the used roll with chocks is transferred from the roll storage area with chocks 4 to the choke changing carriage 5 and the chocks are removed by the chock attaching / detaching device 7, and the bare roll of the chock changing carriage 5 is the crane 10. Roll repair by Eliya 13
It is once placed on the bare roll storage area 8.

During this time, the rolls with chocks that meet the next rolling schedule prepared at the predetermined positions on the roll place 4 with chocks are pulled out by the roll exchanging carriage 3, moved to the rolling mill side, and transferred to the roll reassembling carriage 2, Incorporated into.

On the other hand, the bare roll placed in the bare roll storage area 8 of the roll repair area is repaired by the grinder 14 or the like by the large-sized crane 18 or other transfer means, and is placed on the bare roll storage area 8 again.

These repaired bare rolls are transferred by the crane 10 onto the chock changing carriage 5 and after the chock is attached by the chock attaching / detaching device 7, the chock changing carriage 5 is used for the new schedule with the chocks on the roll yard 4. Stand by as a roll.

Of course, these repairs follow the planned rolling schedule,
Efficiently processed. The bare rolls of used rolls carried in by the automatic transfer crane 10 are placed in the bare roll storage area 8
Although it is placed in a predetermined position where the address is controlled, immediately after rolling operation, the temperature is high (around 100 ° C) in the center and there is a temperature difference between the body and the end. , Thermal deformation occurs at room temperature. Especially, it affects rolls that require fine crown adjustment. In such a case, it is preferable to store in the cooling device 15 (which is water-cooled or air-cooled. Natural air cooling may be used, but it takes a long time and storage time becomes long, which hinders high-efficiency grinding). . The bare rolls housed in the bare roll storage area 8 are sequentially ground, and when the surface needs to be further processed, for example, when performing high-density energy (ED, laser dull processing, etc.) processing or plating processing, Transfer to Elijah 17 of.
The grinding-processed roll becomes a regenerated new roll, passes through a route opposite to the above-mentioned grinder device carry-in route, is attached with a chock, is stored in the chock-equipped roll yard 4, and stands by until a chance to incorporate into the rolling mill.

The above-described roll regeneration process is repeated for each roll set removed from the rolling mill. However, by providing a control function to each of the above-described equipment devices that make up the present invention, it can be performed sequentially. Control is possible, and these can be further integrated for centralized control. Further, the above control can be effectively carried out by appropriately setting the addresses for the roll storage and the equipment for each process. In the embodiment shown in FIG. 3, the roll changing carriage 3 and the chock changing carriage 5 are transferred by tracks 6a and 6b of different systems, and accordingly, the push puller carriage 11 is also arranged in each of them, and the chock roll yard 4 is provided. Is located between these tracks 6a and 6b, but the roll transport, storage in a rack, etc. are operated in the same manner as in the embodiment of FIG. 2 and are essentially the same.

(Effects of the Invention) As described above, the present invention regenerates the rolling mill rolls and smoothly carries out the rolls to the rolling mill, and the entire range from the rolling mill to the roll grinding is consistently performed through the buffer function. As an integrated roll shop system, the optimum layout was adopted according to the priority functions such as roll supply to rolling mills and repair equipment. That is, it is possible to rapidly and stably supply the rolls in both the steady state and the emergency state, it is possible to cope with the high efficiency of rolling, and it is possible to further improve the operation of the rolling mill.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the flow of the basic system of the present invention,
FIG. 2 is a diagram showing an example of the roll shop of the present invention, FIG.
The figure shows another example of the present invention. 1: Rolling mill, 2: Roll changing truck 3: Roll changing truck 4: Roll storage with chocks 5: Chock changing carriage, 6: Track 7: Chock attachment / detachment device, 8: Bare roll storage 9: Roll repair device 10: Automatic transfer crane (Automatic roll transfer crane) 11: Bush puller truck, 12: Orbit 13: Roll repair area, 14: Roll grinding machine 15: Cooling device 16: Roll chock temporary carrier 17: Other area 18, 19: Large crane

Continued Front Page (72) Inventor Jun Hashimoto 1-1-1 Emitsu, Hachimanto-ku, Kitakyushu, Fukuoka Prefecture (1-1) Inside the Yawata Works, Nippon Steel Co., Ltd. ―1-1 Inside Nippon Steel Co., Ltd. Equipment Technology Division (56) Reference JP-A-4-284906 (JP, A) JP-A-63-84705 (JP, A)

Claims (4)

[Claims] 1. A roll shop equipped with a roll changing device 3, a chock changing carriage 5, a chock attaching / detaching device 7, a roll grinding device 14, and a roll transfer means for moving between these devices in the vicinity of a rolling mill line. In addition, a new roll with chocks repaired and prepared for use adjacent to the rolling mill line and a roll storage area with chocks 4 for storing old rolls with chocks pulled out from the rolling mill are arranged, and rolls such as a roll grinder are placed. In the vicinity of the repair device, there is arranged a bare roll storage 8 for placing the old bare roll from which the chocks have been removed from the old roll and a new bare roll that has been repaired by the roll repair device, and the bare roll storage 8 and the roll with chocks. A roll shop for a rolling mill, characterized in that a roll chock attachment / detachment device 7 is interposed between the storage space 4 and the storage space 4. 2. A roll shop provided with a roll changing device 3, a chock changing carriage 5, a chock attaching / detaching device 7, a roll grinding device 14, and a roll transfer means for moving between these devices in the vicinity of the rolling mill line. In addition, a new roll with chocks repaired and prepared for use adjacent to the rolling mill line and a roll storage area with chocks 4 for storing old rolls with chocks pulled out from the rolling mill are arranged, and rolls such as a roll grinder are placed. In the vicinity of the repair device, there is arranged a bare roll storage 8 for placing the old bare roll from which the chocks have been removed from the old roll and a new bare roll that has been repaired by the roll repair device, and the bare roll storage 8 and the roll with chocks. A chock attachment / detachment device 7 is interposed between the yard 4 and a running track 6 laid in front of the rolling mill and the roll yard 4 with chocks, and the extension thereof is performed. Wherein the upper roll chock attachment apparatus 7
And the chock rearrangement cart 5 on the same track 6.
And the roll chock attachment / detachment device 7 between the chock-equipped roll yard 4 and the roll chock attachment / detachment device 5,
Further, the roll shop of the rolling mill is characterized in that the chock changing cart 5 and the bare roll storage 8 are connected by an automatic transfer crane 10. 3. A roll shop for a rolling mill according to claim 2, wherein the roll exchange truck 3 and the chock rearrangement truck 5 are arranged on the track 6. 4. A rolling mill roll shop as set forth in claim 2 or 3, wherein one cart has the functions of the roll exchanging cart 3 and the chock changing cart 5.