JPH0763743B2 - Roll oscillation equipment for rolling mill - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a roll oscillation device for preventing roll marks on a material to be rolled in a rolling mill having split reinforcing rolls of a multi-stage cluster rolling mill.

[Conventional technology]

FIG. 3 shows an example of roll group arrangement of a multi-stage cluster rolling mill. This rolling mill has work rolls 21 above and below the strip passing surface of the strip S, a pair of intermediate rolls 22a and 22b for supporting the work rolls 21, and a pair of intermediate rolls 22a and 22b.
Split reinforcement rolls that support and are divided in the axial direction of the roll.
3, 24a and 24b are arranged. Split reinforcement rolls 23, 24a, 24
b is rotatably supported by fixed shafts 25, 26a and 26b. In such a rolling mill, split reinforcing rolls are used during rolling.
Roll marks in the roll circumferential direction are given to the intermediate rolls 22a, 22b by 23, 24a, 24b, and further, in order to prevent this roll mark from being transferred to the steel strip S via the work roll 21, the roll marks shown in FIG. Intermediate roll 22 as shown in FIG.
A roll oscillation device for reciprocating the a and 22b in the axial direction of the roll is provided. FIGS. 4 and 5 are views showing the conventional roll oscillation device. In both of these figures, an intermediate roll frame 28 is fitted in a housing 32, and both ends of a work roll 21 are axially supported inside thereof. The bearing box 26 is fitted so as to be vertically movable. Then, in the pair of square holes formed in the intermediate roll frame 28 so as to penetrate therethrough in the axial direction of the rolls, bearing boxes 27a, 27b for axially supporting both ends of the intermediate rolls 22a, 22b on the inlet side and the outlet side, respectively. Are reciprocatingly fitted. Further, the reinforcing roll frame 31 is fitted in the housing 32 so as to be vertically movable, and the fixed shaft 2
The split reinforcing rolls 23, 24a, 24b are rotatably supported via 5, 26a, 26b, respectively. An oscillation frame 59 is fixedly provided on the working side W of the reinforcing roll frame 31, and a shaft 54 fixed to bearings 59a and 59b of the oscillation frame 59 has a dogleg-shaped inlet side and an outlet side. Arm 51a,
51b are respectively pivoted. Rollers 53a, 53b are pivotally attached to the lower ends of both arms 51a, 51b via pins 57a, 57b, and are inserted into the square holes at the tips of the bearing lids 29a, 29b fixed to the bearing boxes 27a, 27b. There is. Further, ring bars 52a, 52b are pivotally attached to the upper ends of the arms 51a, 51b via pins 55a, 55b, and the upper ends of the link bars 52a, 52b are of a hydraulic cylinder 58 fixed to the oscillation frame 59. Rod 58a
It is pivotally attached by a pin 56. This hydraulic cylinder
Reference numeral 58 is a double rod type, and the upper end of the rod 58a is connected to a sensor 58b by a lever 58d, and its reciprocating motion and stroke are controlled by a controller and a proportional solenoid valve (not shown). Further, the sensor 58b detects the moving direction and stroke of the rod 58a, and sends it to a control device (not shown). Although not shown, a roll oscillation device having substantially the same structure as that described above is arranged below the steel strip S in a vertically symmetrical manner.

When the intermediate rolls 22a and 22b are oscillated during rolling of the steel strip S, the rod 58a of the hydraulic cylinder 58 is reciprocated with a predetermined stroke by the sensor 58b, the control device, and the proportional solenoid valve (not shown). 4 and 5 show a state where the rod 58a has moved upward, and the link bars 52a, 5
The upper end of 2b moves upward, and the distance between the upper ends of the arm 51a on the input side and the arm 51b on the output side is narrowed, the lower end of the arm 51a on the input side is on the working side W, and the lower end of the arm 51b on the output side is Drive side D
Move to each. By the movement of the arms 51a and 51b, the bearing lid 29a on the inlet side, the bearing box 27a, and the intermediate roll 22a move to the working side W, and the bearing lid 29b on the outlet side, the bearing box 27b, and the intermediate roll 22b move to the driving side D. Moving.

Further, when the rod 58a is moved downward as shown by the chain double-dashed line, the gap between the upper ends of the entrance side arm 51a and the exit side arm 51b becomes wider, and the lower end of the entrance side arm 51a, contrary to the above. Moves to the drive side D, and the lower end of the arm 51b on the output side moves to the working side W. By the movement of the arms 51a and 51b, the intermediate roll 22a on the entrance side moves to the driving side D, and the intermediate roll 22b on the exit side moves to the working side W, respectively.

The lower intermediate rolls 22a, 22b of the strip steel S move in the axial direction of the rolls relative to the upper intermediate rolls 22a, 22b described above.

[Problems to be Solved by the Invention]

The conventional roll oscillation device described above has the following problems to be solved.

That is, in the conventional roll oscillation device, since the hydraulic cylinder 58 and the sensor 58b are mounted on the reinforcing roll frame 31 via the oscillation frame 59, when the split reinforcing rolls 23, 24a, 24b are recombined, Since the frame 31 is inserted into and removed from the housing 32, the hydraulic pipe of the hydraulic cylinder 58 and the electric wiring of the sensor 58b must be attached and detached each time. Further, the roll oscillation device below the strip steel S also requires the hydraulic cylinder 58 and the sensor 58b, which makes the device expensive and complicates its control.

The present invention has been proposed to solve the above problems,
It is an object of the present invention to provide a roll oscillation device which has a simple structure, can quickly reassemble split reinforcing rolls, and can be easily controlled.

[Means for Solving the Problems]

The present invention, as a means for solving the above problems, a work roll,
A roll group consisting of an intermediate roll supporting the work roll and a split reinforcing roll divided in the axial direction of the roll and supporting the intermediate roll is provided in a rolling mill arranged in the housing, and the intermediate roll is rolled during rolling. In a roll oscillation device that reciprocates in the roll axis direction,
A rod mounted on a reinforcing roll frame supporting the split reinforcing rolls and connected to the intermediate roll, and a mechanical reciprocating means having a rotating shaft for reciprocating the rod, and a mechanical reciprocating device mounted on the housing. A roll oscillation device for a rolling mill, comprising: a rotation driving means that is easily separated from and connected to a rotation shaft of a reciprocating means, and a rotation angle detecting means provided on the rotation driving means. Is what you are trying to do.

[Action]

Since the present invention is configured as described above, it has the following effects. That is, when the rotary shaft of the mechanical reciprocating means is rotated by the rotary driving means, the mechanical reciprocating means converts the rotary motion of the rotary shaft into the linear motion of the rod, and the load moves in the roll axial direction to move the intermediate roll. Is moved in the direction of the roll axis. Then, when the intermediate roll is moved in the roll axial direction by a predetermined dimension, the rotation driving means is rotated in the opposite direction to the above, and the rod is moved in the opposite direction to move the intermediate roll to the predetermined amount. Reciprocates in the axial direction with a stroke.

Further, the rotation angle detection means detects the rotation speed, rotation direction and rotation speed of the rotation driving means and transmits the rotation speed to the control device, and the control device has a predetermined rotation speed related to the stroke of the reciprocating movement of the intermediate roll which is input in advance. Then, the rotation driving means is stopped, and it is rotated in the opposite direction at a predetermined speed.

Also, a mechanical reciprocating means provided on the reinforcing roll frame,
Since it is easily separated from the rotation driving means provided in the housing, the mechanical reciprocating means and the rotation driving means can be easily separated from each other when the split reinforcing rolls are reassembled, so that the reassembling work can be speeded up.

Further, since the rotation driving means is provided on the housing side, piping and wiring at the time of reassembling divided reinforcing rolls, which are caused by providing a hydraulic cylinder on the reinforcing roll frame side and reciprocating the intermediate roll as in the conventional case, There is no need for complicated operations such as putting on and taking off oil, draining oil, and filling oil.

〔Example〕

An embodiment of the present invention will be described in detail with reference to FIGS. The same members and parts as those of the conventional device are designated by the same reference numerals, and duplicated description will be omitted. 1 and 2, the working side W of the reinforcing roll frame 31
An oscillation frame 9 is fixedly mounted to the oscillation frame 9, and a pair of worm jacks 8a and 8b is fixed to the oscillation frame 9 and bearings 9a and 9b are fixed. These worm jacks 8a, 8b are known ones, and the worm jack 8a on the entry side has a right-handed worm internally and has a rotary shaft 8c to which this worm is mounted and a rod 5a engaging with this worm. ing. Also, the output side warm jack
The worm 8b is internally provided with a left-hand screw worm, and has a rotating shaft 8d on which the worm is mounted and a rod 5b which engages with the worm. The rotary shafts 8c and 8d are connected to each other, and the rods 5a and 5b are provided with square holes in the up-down direction at their tip ends.

A fixed shaft 4 is fitted on the bearings 9a, 9b, and a pair of arms 1a, 1b are pivotally mounted on the fixed shaft 4, respectively. The upper ends of both arms 1a and 1b are connected to rollers via pins 6a and 6b.
2a and 2b are pivotally attached, and rollers are attached to the lower end through pins 7a and 7b.
3a and 3b are pivotally attached. The upper rollers 2a, 2b are in the square holes of the rods 5a, 5b, and the lower rollers 3a, 3b are the bearing lids 29a,
It is loosely inserted in the square hole of 29b. A bevel gear 11 is fixed to the working side W of the housing 32, fixed to the housing 32, and connected to the electric motor 10 having a rotation angle detector 10a such as a pulse oscillator.
Further, one of the bevel gears 11 is connected to the rotary shaft 8c of the entry-side worm jack 8a by a universal joint 12, and the other is connected to the lower roll oscillation via the rotary shaft 11a, a bevel gear, and a universal joint (not shown). It is connected to a device (not shown). The electric motor 10 and the rotation angle detector 10a are connected to a control panel (not shown). The roll oscillation device below the surface of the strip S passing through the steel strip is also constructed in a vertically symmetrical manner and is substantially the same as the above. However, the electric motor 10 and the rotation angle detector 10a are not installed because they are shared vertically. When the intermediate rolls 22a and 22b are oscillated during rolling of the strip steel S, the bevel gear 11 is rotated by the electric motor 10 and the worm jacks 8 of both sides are rotated through the universal joint 12.
A and 8b are actuated, and the lower worm jack (not shown) is actuated by the rotating shaft 11a via the lower bevel gear (not shown). This worm jack 8a, 8
As shown in FIG. 2 by the operation of b, the rod 5a on the entrance side is
Moves to the drive side D, and the rod 5b on the output side moves to the working side W. Then, both arms 1a, 1b are rotated to move the bearing lid 29a on the inlet side to the working side W and the bearing lid 29b on the outlet side to the driving side D, respectively, and to move both bearing lids 29a, 27b via the bearing boxes 27a, 27b. The intermediate rolls 22a and 22b are moved in mutually opposite directions along the roll axis. The rotation speed, rotation speed (rotation angle) and rotation direction of the electric motor 10 corresponding to the predetermined speed and stroke of the reciprocating movement of the intermediate rolls 22a, 22b are input to the microcomputer of the control panel (not shown), The rotation angle detector 10a is the electric motor 1
The rotation speed, the rotation speed, and the rotation direction of 0 are detected and transmitted to a control panel (not shown), and the control panel (not shown) uses the electric motor 10
Is rotated at a specified speed, and when the specified speed is reached, the motor
By stopping 10 and rotating in the reverse direction, both intermediate rolls 22a and 22b are reciprocated in opposite directions at a predetermined speed and stroke. Note that the present invention is not limited to the above-described embodiment, and is also applied to a roll group including a split reinforcing roll and an intermediate roll, which is arranged above or below the rolled material passing plate. It is possible. A hydraulic motor may be used instead of the electric motor.

As described above, in this embodiment, the wall jacks 8a and 8b for reciprocating the intermediate rolls 22a and 22b are used as the reinforcing roll frame 31, the electric motor 10 for driving them in rotation, and the bevel gear.
11 Others are provided in the housing 32 respectively, and the spaces between them are separated and connected by the free universal joint 12, so the split reinforcing rolls 23, 24
When the a and 24b are recombined, the universal joint 12 is simply separated, the relationship between the reinforcing roll frame 31 side and the housing 32 side is broken, and the recombining work proceeds easily. Further, the means for reciprocating the intermediate rolls 22a, 22b on the side of the reinforcing roll frame 31 is not the hydraulic cylinder as in the conventional case but the worm jacks 8a, 8b.
Since the configuration is mainly based on, the work of attaching and detaching hydraulic piping and sensor piping is not required at all, and of course the above-mentioned reassembling work can be shortened, the structure is simplified, and both manufacturing costs and maintenance costs are reduced. It has a remarkable advantage that

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects. That is, the roll oscillation device of the present invention comprises a rod connected to the intermediate roll and a mechanical reciprocating means having a rotating shaft for reciprocating the rod, mounted on the reinforcing roll frame, and connected to the rotating shaft. By installing the drive means in the housing, it is not necessary to attach or detach the piping and wiring of the roll oscillation device when changing the split reinforcing rolls.
Moreover, since the work can be performed only by disconnecting the connecting portion between the rotation driving means and the mechanical reciprocating means, the reassembling work can be performed quickly, and the connector which tends to occur when the piping and wiring are attached and detached. Trouble can be eliminated. Further, in the case where the roll groups including the split reinforcing rolls and the intermediate rolls are arranged above and below the surface of the material to be rolled, the upper and lower roll oscillation devices can be operated by only one set of the rotation driving means and the rotation angle detecting means. So the device is simpler,
The control becomes easy.

[Brief description of drawings]

1 is a partially cutaway front view showing a roll oscillation device of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a multi-stage cluster rolling mill. FIG. 4 is a conceptual view showing an example of arrangement of roll groups, FIG. 4 is a front view showing an example of a conventional roll oscillation device partially broken away, and FIG. 5 is a sectional view taken along the line VV of FIG. . 1a, 1b …… arm, 2a, 2b, 3a, 3b …… roller, 5a, 5b …… rod, 8a, 8b …… worm jack, 8c, 8d …… rotating shaft, 9…
… Oscillation frame, 10 …… motor, 10a …… rotation angle detector, 11 …… bevel gear, 12 …… universal joint, 21 ……
Work rolls, 22a, 22b …… Intermediate rolls, 23, 24a, 24b ……
Split reinforcement rolls, 27a, 27b …… Bearing box, 28 …… Intermediate roll frame, 29a, 29b …… Bearing lid, 31 …… Reinforcement roll frame, 32 …… Housing.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazutoyo Arita 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Hiroshima Works (56) Reference JP-A-60-238009 (JP, A) JP 63-149006 (JP, A) JP 1-181908 (JP, A) JP 4-18923 (JP, B2)

Claims (1)

[Claims] 1. A rolling mill having a work roll, an intermediate roll supporting the work roll, and a split reinforcing roll divided in the axial direction of the roll and supporting the intermediate roll provided in a rolling mill disposed in a housing. In the roll oscillation device that reciprocates the intermediate roll in the axial direction of the roll during rolling, a rod mounted on a reinforcing roll frame that supports the split reinforcing rolls and connected to the intermediate roll, and this rod. A mechanical reciprocating means having a rotating shaft for reciprocating movement, a rotary driving means mounted on the housing and easily separated from the rotating shaft of the mechanical reciprocating means, and a rotation provided on the rotary driving means. A roll oscillation device for a rolling mill, comprising: an angle detecting means.