JP2831164B2 - Roll cross device of cross roll rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll crossing device for a cross roll rolling mill in which an upper roll and a lower roll intersect at a required angle with respect to a direction perpendicular to a rolling direction.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional cross roll rolling mill, and FIG.
Fig. 1 shows a roll cloth device of a cross roll rolling mill. In FIG. 3, DS shown in the upper left represents the drive side, WS shown in the lower right represents the working side, A shown in the lower left represents the entry side of the rolled material, and B shown in the upper right represents the exit side.

As shown in FIGS. 2 and 3, the upper work roll 11 has a pair of rotating shafts,
13 and is rotatably supported by the lower work roll 14.
The rotary shaft is rotatably supported by a pair of lower work roll chocks 15 and 16, and the upper work roll 11 and the lower work roll 14 are opposed to each other. The upper backup roll 17 is located above the upper work roll 11,
It is rotatably supported by a pair of upper backup roll chocks 18 and 19. On the other hand, lower work roll 1
The lower backup roll 20 is located below the lower roller 4 and is rotatably supported by a pair of lower backup roll chocks 21 and 22.

The upper work roll chock 12 and the upper backup roll chock 18 are supported at the front and rear by an entrance crosshead 23 and an exit crosshead 24, respectively. The other upper work roll chock 13 and upper backup roll chock 19 are supported by an entrance crosshead 25 and an exit crosshead 26 at the front and rear. Further, one of the lower work roll chock 15 and the lower backup roll chock 21 is supported at the front and rear by an entrance crosshead 27 and an exit crosshead 28,
The lower work roll chock 16 and the lower backup roll chock 22 are supported by an entrance crosshead 29 and an exit crosshead 30 at the front and rear. In addition,
Each of the crossheads 23 to 30 is movably supported by the housing 31.

[0005] A pair of upper and lower screw shafts 32 and 33 are respectively provided on the entrance crosshead 23 and the exit crosshead 24 supporting the upper chocks 12 and 18, and the entrance crosshead 25 supporting the upper chocks 13 and 19 is provided. A pair of upper and lower screw shafts 34 and 35 are engaged with the outlet side crosshead 26, respectively, and the worm reducer 3 is engaged with each of the screw shafts 32, 33, 34 and 35.
6, 37, 38, 39 are engaged.

On the other hand, a pair of upper and lower screw shafts 40 and 41 are respectively provided on the entrance crosshead 27 and the exit crosshead 28 that support the lower chocks 15 and 21, and the entrance crosshead that supports the lower chock 16 and 22. A pair of upper and lower screw shafts 42, 43 are engaged with the head 29 and the outgoing crosshead 30, respectively, and worm reducers 44, 45, 46, 47 are engaged with the screw shafts 40, 41, 42, 43, respectively. doing.

The worm speed reducers 36 and 37 are connected to connecting shafts 48,
The worm reducers 38 and 39 are drivingly connected to bevel gears 54 and 55 via connecting shafts 52 and 53, respectively. And
Similar brakes 56 are provided on the bevel gears 50 and 51, respectively.
And the clutch 57 are connected, and further, the upper crosshead motor 58 on the same driving side is connected. The same brake 59 and clutch 60 are connected to the bevel gears 54 and 55, respectively, and further, the upper crosshead motor 61 on the same working side is connected.

On the other hand, the worm speed reducers 44 and 45 are driven to bevel gears 64 and 65 via connecting shafts 62 and 63, and the worm speed reducers 46 and 47 are driven to bevel gears 68 and 69 via connecting shafts 66 and 67, respectively. Are linked. The same brake 70 and clutch 71 are connected to the bevel gears 64 and 65, respectively, and further, a lower crosshead motor 72 on the same driving side is connected. The same brake 73 and clutch 74 are connected to the bevel gears 68 and 69, respectively, and further, a lower crosshead motor 75 is connected to the same working side.

When rolling is performed, as shown in FIGS. 2 and 3, a rolled material 76 is fed from the input side A, and the upper work roll 11 and the lower work roll 14 perform rolling. It is sent from the side B and supplied to the next step.

During the rolling, the driving side and working side crosshead motors 58, 72, 61, 75 are simultaneously driven to connect the connecting shafts 48, 49, 62, 63, 52, 53, 6
Screw shafts 32, 33, 4 via 6, 67, etc.
By rotating 0,41,34,35,42,43,
The rotation axes of the upper work roll 11 and the upper backup roll 17 and the lower work roll 14 and the lower backup roll 20 are crossed.

That is, the screw shafts 32 and 33 and the screw shafts 4 are
0, 41 and the screw shafts 34, 35 and the screw shafts 42, 43 have different rotational directions, respectively.
The chocks 12, 18 and the chocks 15, 21 and the chocks 13, 19 and the chock 16, 22 move in different directions as indicated by arrows in FIG. Accordingly, the upper work roll 11 and the lower work roll 14 rotate in opposite directions about the center of the roll, and their rotation axes intersect with each other. By setting the cross angle to a required angle, the sheet crown is controlled. ing. After the cross angle is set, the rotation of each crosshead motor 58, 72, 61, 75 is stopped by the brakes 56, 70, 59, 73.

When the rolls are to be changed, for example, the crosshead motors 58, 72, 6 with the outgoing side (B) clutches 57, 70, 60, 74 disengaged.
1 and 75, and each entry-side crosshead 23, 25, 2
7, 29 are moved to the entry side (A). Then, each clutch 57, 70, 60, 74 on the incoming side (A) is disengaged and the outgoing side is connected, and in this state, each crosshead motor 5
8, 72, 61, and 75 are driven in the reverse manner to move the respective outgoing crossheads 24, 26, 28, and 30 to the outgoing side (B). Therefore, each of the crossheads 23 to 30 is opened,
The upper work roll 11, the lower work roll 14, the upper backup roll 17, and the lower backup roll 20 are pulled out from the work side (WS) by a predetermined device, and are replaced with new ones.

[0013]

In the above-mentioned conventional cross roll rolling mill, the entrance and exit crossheads are moved by a single motor during roll crossing. That is, for example, the crosshead motor 58 moves the crosshead 23 on the entry side and the crosshead 24 on the exit side. Therefore, this crosshead motor requires a large output, and the moment of inertia of the motor itself increases. Therefore, the timing of stopping the motor by the brake is delayed, and the movement stop position of the cross head is shifted, and the accuracy of setting the position of the cross angle between the upper work roll 11 and the lower work roll 14 and the synchronization accuracy with another drive system are reduced. There was a problem that would.

If the moment of inertia of the motor itself also increases, the load received when the screw shaft jams during the movement of each crosshead increases, which may damage the machine.

Further, when the rolls are changed, the crosshead is moved and released. At this time, the input and output clutches and the respective motors are operated each time to separate the input and output crossheads separately. It has to be moved, and the work and the drive control of the rolling mill are troublesome, and there is a problem that the roll change time becomes long.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a roll cross device of a cross roll rolling mill which improves the cross angle setting accuracy and workability in a roll cross operation. .

[0017]

According to a first aspect of the present invention, there is provided a roll crossing apparatus for a cross roll rolling mill, wherein a rotating shaft is supported by an upper roll chock, and a rotating shaft is supported by a lower roll chock. The lower roll is positioned opposite to the lower roll, and the upper and lower rolls are provided at each of the roll chocks by a pair of upper and lower cross heads. in intersecting disposed a cross-rolling mill, each independently and the upper and lower exit side for motor for moving the upper and lower upper and lower inlet side for the prime mover and the upper and lower exit side crosshead moving the inlet side crosshead The prime mover and the prime mover
Connect the prime mover with the upper clutch, and
The entrance-side prime mover and the above-mentioned exit-side prime mover are connected via a lower clutch.
And are connected .

[0018]

[Action] up and down to move the upper and lower inlet side for the motor to move the upper and lower entry-side cross-head top and bottom of the exit side cross head
Out provided independently and the side of the prime mover, the upper inlet side for the prime mover and the top of
While connecting the motor for the exit side via the upper clutch,
The prime mover and the prime mover are connected via the lower clutch.
By connecting to each other , each clutch
When connected, the crossheads on the entry side and the exit side can be moved in the same direction synchronously , and the roll cross angle can be set with high precision. Further, when changing the rolls, the clutches can be disengaged and the crossheads on the entry side and the exit side can be simultaneously moved in the opposite directions, so that the roll change time is reduced.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a roll cloth device of a cross roll rolling mill according to one embodiment of the present invention. Note that members having the same functions as those in the related art are denoted by the same reference numerals, and redundant description will be omitted.

The cross-roll rolling mill according to the present embodiment has substantially the same structure as the conventional one, and as shown in FIG.
The upper and lower work rolls 11, 14 and the upper and lower work roll chocks 12, 13, 15, 16 supporting the same, the upper and lower backup rolls 17, 20 and the upper and lower backup roll chocks 18, 19, 21, 22 have the same configuration. ing.

However, the roll crossing device of the cross roll rolling mill according to the present embodiment includes a motor for the input side crosshead for moving the respective input side crossheads and a motor for the output side crosshead for moving the respective output side crossheads. Are provided independently of each other.

That is, in the upper roll configuration, an upper motor 81 is connected to the bevel gear 50, an upper motor 82 is connected to the bevel gear 51, and brakes 83 and 84 are further connected. 84 is connected via a clutch 85. Also, bevel gear 5
4 is connected to an upper-side motor 86, the bevel gear 55 is connected to an upper-side motor 87, and the brakes 88 and
89, and the brakes 88, 89 are connected to the clutch 9
0.

On the other hand, in the lower roll configuration, a lower-side motor 91 is connected to the bevel gear 64, a lower-side motor 92 is connected to the bevel gear 65, and brakes 93 and 94 are connected. , 94 are connected via a clutch 95. Also, bevel gear 6
8 is connected to a lower-side motor 96, and the bevel gear 69 is connected to a lower-side motor 97.
The brakes 98 and 99 are connected to the clutch 1
00.

At the time of the roll cloth, first, the clutches 85, 90, 95, 100 are connected, and the motors 81, 82, 91, 92 on the driving side are driven to rotate forward, while the motors 86, 87, 96 on the working side. , 97 are driven in reverse. Then, each connecting shaft 48, 49, 62, 63, 52, 53, 6
Screw shafts 32, 33, 4 via 6, 67, etc.
By rotating 0, 41, 34, 35, 42, and 43, the crossheads 23 to 30 move in different directions as indicated by arrows in FIG. Therefore, the upper work roll 11 and the lower work roll 14 rotate in opposite directions about the center of the roll, and their rotation axes cross each other, and the cross angle is set to a required angle. After setting the cross angle, the motors 81, 82, 91, 9 on the driving side are set.
2 and brakes 83, 84, 88, 89, 93, 94, 98,
Stop by 99.

In order to change the rolls, the clutches 85, 90, 95, 100 are disengaged, and the upper and lower input motors 81, 86, 91, 96 are driven forward to rotate. The crossheads 23, 25, 27, 29 are moved to the entry side (A). Also, the upper and lower outlet motors 82, 87, 9
2 and 97 are driven in reverse, and each outgoing crosshead 24, 2
6, 28 and 30 are moved to the exit side (B). Therefore, each of the crossheads 23 to 30 is opened, and the upper work roll 1
1 and lower work roll 14, upper backup roll 17
The lower backup roll 20 is pulled out from the working side (WS) by a predetermined device, and is replaced with a new one. After the replacement work, the upper and lower entrance motors 81, 8
6, 91, 96 and upper and lower exit motors 82, 87, 9
Driving 2,97 in the opposite manner as before closes each crosshead 23-30 and supports a new roll.

[0027]

As described above in detail with reference to the embodiments, according to the roll cloth apparatus of the cross roll rolling mill of the present invention, the lower roll supported by the upper roll chock and the lower roll supported by the lower roll chock. The upper and lower rolls are positioned opposite to each other at a required angle with respect to the direction perpendicular to the rolling direction by the upper and lower entrance crossheads and exit crossheads. respectively upper and lower exit side for motor for moving the upper and lower inlet side for the prime mover and egress crosshead moving independently to provided, and the upper inlet side for the prime mover and the supra-side for motor
With an upper clutch and a lower
When in <br/> of the Shimoide side for motor linked through a lower clutch, roll crossing times, and entry side by connecting the clutch
Synchronize the exit crosshead in the same direction
In, sets the output of the prime mover smaller it is possible to reduce the moment of inertia, the tuning of positioning accuracy and other drive system of the cross angle between the upper roll and the lower roll in the exact timing of the stop of the motor Accuracy can be improved. When changing rolls , each clutch is disengaged. <br/> The incoming and outgoing crossheads are simultaneously turned in opposite directions.
By moving to, work can be simplified and automated, work time can be shortened, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a roll cloth device of a cross roll rolling mill according to one embodiment of the present invention.

FIG. 2 is a front view of a conventional cross roll rolling mill.

FIG. 3 is an exploded perspective view of a roll cloth device of a conventional cross roll rolling mill.

[Explanation of symbols]

 11 upper work roll 12,13 upper work roll chock 14 lower work roll 15,16 lower work roll chock 17 upper backup roll 18,19 upper backup roll chock 20 lower backup roll 21,22 lower backup roll chock 23,25,27,29 entrance cross Head 24,26,28,30 Outgoing crosshead 81,86,91,96 Incoming motor 82,87,92,97 Outgoing motor

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21B 13/14, 31/16

Claims (1)

(57) [Claims] An upper roll having a rotating shaft supported by an upper roll chock and a lower roll having a rotating shaft supported by a lower roll chock are opposed to each other, and a pair of upper and lower entry crosses provided on each of the roll chocks are provided. in the head and the exit-side cross rolling mill disposed with required angle intersecting the direction perpendicular to the upper roll and lower roll in the rolling direction by the cross head, upper and lower moving the upper and lower entry-side crosshead Entry side prime mover and said
The upper and lower exit-side prime movers for moving the upper and lower exit-side crossheads are provided independently of each other , and
When the prime mover is connected via the upper clutch,
At the same time, the lower-side prime mover and the lower-side prime mover are
A roll cross device for a cross roll rolling mill, wherein the roll cross device is connected via a latch .