JP3644072B2 - Shape control roll device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a shape control roll device that shifts rolls with initial crowns in the axial direction in order to correct the shape (plate crown and flatness) of a material to be rolled in rolling.
[0002]
[Prior art]
Various techniques such as roll shift, roll bend, and expanded diameter roll (VC roll) have been developed and used for the accuracy in the width direction of the rolled steel sheet, that is, the sheet crown control.
[0003]
[Problems to be solved by the invention]
For example, Japanese Patent Publication No. 6-69578 “Roller” is an example of a roll shift that moves a work roll in the axial direction. (1) A large thrust force is applied to a roll chock bearing to move the roll chock relative to the mill housing. In order to move the work roll, a roll shift mechanism consisting of many parts is required, the structure is complicated, and (2) the roll support position is unbalanced by the roll shift, and the mill rigidity is increased. The material to be rolled is easy to meander due to change, and correction by shifting is necessary to obtain the target plate thickness. (3) When the roll is worn, the entire roll needs to be replaced. is there.
[0004]
The “rolling roll” disclosed in Japanese Patent Laid-Open No. 57-154303 is an example of an expanded roll, and is composed of an arbor supported at both ends and a sleeve surrounding the arbor, and pressure oil is supplied between the arbor and the sleeve. However, because the sleeve and the arbor are separated, the rigidity of the entire roll tends to be low, and (5) the torque is transmitted between the sleeve and the arbor. Non-rotating means (keys, etc.) are indispensable, and the rigidity in the circumferential direction of the roll is not uniform, thereby causing problems such as reduction in the plate thickness accuracy in the longitudinal direction of the material to be rolled.
[0005]
In order to solve these problems, Japanese Patent Publication No. 5-73481 “rolling roll” has been proposed. In this rolling roll, a sleeve roll provided with an S-shaped curve is fitted to the roll shaft so as to be slidable in the axial direction, and is restricted from rotating in the circumferential direction by a detent. A male screw) and a driving screw (female screw) supported on the roll shaft are screwed together, and the sleeve roll is moved in the axial direction by the rotation of the driving screw.
[0006]
However, this rolling roll has a problem that it is necessary to make the drive screw idle during use of the rolling roll or idling in order to hold the sleeve roll in a predetermined position. Therefore, in order to change the position of the sleeve roll, it is necessary to completely stop one end of the rolling roll, connect the drive screw to an external motor or the like, and rotate it. In addition, there is a problem that it takes time and effort to restart.
[0007]
Furthermore, since this rolling roll receives reaction force due to the screwing of the base screw and the drive screw, it is indispensable to prevent rotation (key, etc.) between the sleeve roll and the roll shaft. There is a problem that the rigidity in the circumferential direction cannot be made uniform, and the plate thickness accuracy in the longitudinal direction of the material to be rolled decreases.
[0008]
The present invention has been made to solve the various problems described above. That is, an object of the present invention is to provide a shape control roll apparatus that can be roll-shifted during use of a rolling roll or idling and that the rigidity in the circumferential direction of the roll is substantially uniform.
Another object of the present invention is that the roll support position does not change due to the roll shift, and the roll rigidity is high as in the case of the conventional solid roll, and the roll itself is handled as an integral part (exchange, polishing, driving). An object of the present invention is to provide a shape control roll device that can simplify the structure and maintenance of a rolling mill to the same extent as a rolling mill without a roll shift mechanism.
[0009]
[Means for Solving the Problems]
According to the present invention, a hollow cylindrical sleeve having a cylindrical cavity and an outer peripheral surface with an initial crown, a cylindrical central portion that is shorter than the sleeve and inserted into the cylindrical cavity with a tightening margin, and shafts from both ends thereof are provided. An arbor having a pair of roll shafts extending outward in the direction and supported by bearings, and being fixed in a watertight manner at both ends of the sleeve, the roll shaft is slidable and watertight, and a pair of liquid chambers are formed at both ends of the sleeve. has a rolling roll of the pair end plate of said arbor, said a high-pressure line for circulating the high pressure fluid communication between the outer peripheral surface of the roll shaft end and arbor central portion, and the end of the roll shaft has a pair of the low-pressure line for circulating the low pressure fluid respectively communicating with the pair of liquid chambers, further, a hydraulic system for supplying and discharging of the high-pressure fluid and low pressure fluid, the rotation from the hydraulic system At the end of the roll shaft Comprising a rotary joint for supplying pressure fluid and low pressure fluid, wherein the interference is in a state of high pressure fluid from the outer peripheral surface of the arbor central portion is discharged, the sleeve a torque of the arbor and integrated with the sleeve and the arbor In the state where the high pressure fluid is supplied to the outer peripheral surface of the central part of the arbor, the tightening allowance can be eliminated , and the high pressure fluid is supplied to the outer peripheral surface of the central part of the arbor. A shape control roll characterized in that the sleeve can be shifted in the axial direction by supplying a low-pressure fluid to the liquid chambers at both ends of the sleeve in a state in which the sleeve is inflated to eliminate the interference with the arbor An apparatus is provided.
[0010]
According to a preferred embodiment of the present invention, the rolling roll includes a position detector that is attached to an end plate and detects a position of a sleeve, and a slip ring that extracts a detection signal of the position detector to the outside, and the detection A control device is further provided for controlling the high-pressure fluid and the low-pressure fluid according to the signal. Moreover, it is preferable to have the some liquid groove extended in the circumferential direction on the outer peripheral surface of the center part of an arbor.
[0011]
[Action]
According to the configuration of the present invention, the arbor, and the high-pressure line for circulating the high pressure fluid communication between the outer peripheral surface of the roll shaft end and arbor central portion, a pair of liquid end and sleeve end portions of the roll shaft since a pair of the low-pressure line for circulating the low pressure fluid communicates between the chamber are provided respectively, by supplying high pressure fluid to the outer peripheral surface of the arbor central portion via a rotary joint, arbor and inflated the sleeve The sleeve can be moved axially with respect to the arbor, and in this state, a low-pressure fluid is supplied to one of the liquid chambers at both ends of the sleeve via the low-pressure channel. The sleeve with the initial crown can be shifted in the axial direction during use of the rolling roll or idling as in the double-shaft cylinder.
[0012]
In addition, the roll body that contributes to rolling does not require a key or the like between the sleeve and the arbor, so the entire roll can be configured almost uniformly in the circumferential direction, and the rigidity in the circumferential direction of the roll is almost uniform. Can be.
Furthermore, even if the sleeve with the initial crown is shifted in the axial direction, the arbor is not moved in the axial direction and is supported by the bearing at the same position, so that the roll support position does not change due to the roll shift. Also, if the high-pressure fluid is discharged, the sleeve and arbor are integrated by tightening allowance, so that the rigidity of the roll is high and the roll itself is handled as an integral part (replacement, polishing, drive) as with a conventional solid roll. In addition, the structure and maintenance of the rolling mill can be simplified to the same extent as a rolling mill without a roll shift mechanism.
[0013]
【Example】
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected and used for the common part in each figure.
FIG. 1 is an overall configuration diagram of a shape control roll device according to the present invention. In this figure, 1 is a sleeve, 2 is an arbor, 3 is an end plate, 4 is a seal packing, 5 is a position detector, 6 is a rotary joint, 7 is a slip ring, 8 is a roll chock, 9 is a roll neck bearing, 12 is a solenoid valve, 13 is a control device, 14 is a liquid groove for high-pressure liquid, 15 is a liquid chamber, and 18 is an O-ring.
[0014]
The shape control roll device of the present invention includes a rolling roll 10 comprising a hollow cylindrical sleeve 1, an arbor 2, a pair of end plates 3, and a position detector 5, and a rotary joint attached to the end of the rolling roll 10. 6 and slip ring 7, hydraulic devices 16 and 17 for generating high-pressure fluid p1 and low-pressure fluids p2 and p3, and a control device 13 for controlling them.
[0015]
The sleeve 1 has a cylindrical cavity 1a and an outer peripheral surface 1b with an initial crown. The arbor 2 has a cylindrical central portion 2a that is shorter than the sleeve 1 and inserted into the cylindrical cavity 1a with a tightening margin, and a pair of roll shafts 2b that extend axially outward from both ends and are supported by bearings 9. . As will be described later, the tightening margin between the sleeve 1 and the arbor 2 is such that the high pressure fluid p1 is discharged from the outer peripheral surface of the arbor center portion 2a, and the sleeve 1 and the arbor 2 are integrated so that the torque of the arbor 2 is increased. 1 and the tightening allowance can be eliminated while the high-pressure fluid p1 is supplied to the outer peripheral surface of the arbor center portion 2a . Moreover, it has the some liquid groove 14 extended in the circumferential direction on the outer peripheral surface of the arbor center part 2a.
[0016]
The end plate 3 is watertightly fixed to both ends of the sleeve 1 by O-rings 18, and the roll shaft 2 b is slidable and watertightly surrounded by the seal packing 4, thereby forming a pair of liquid chambers 15 at both ends of the sleeve. doing.
The position detector 5 is attached to the end plate 3 and detects the position of the sleeve 1. The position detector 5 may be a contact type or a non-contact type as illustrated. For example, a magnescale and a detector are suitable for this.
[0017]
The arbor 2 communicates the high pressure flow path 2c that communicates at least one end of the roll shaft 2b with the outer peripheral surface of the arbor center portion 2a, and the end of the roll shaft 2b and the pair of liquid chambers 15, respectively. And a pair of low-pressure flow paths 2d. Further, the rotary joint 6 supplies the high-pressure fluid p1 and the low-pressure fluids p2 and p3 to the end of the roll shaft 2b rotating from the external hydraulic devices 16 and 17, and the slip ring 7 detects the detection signal of the position detector 5. s1 and s2 are taken out to the outside.
[0018]
The control device 13 controls the high-pressure fluid p1 and the low-pressure fluids p2 and p3 based on the detection signals s1 and s2. The pressure of the high-pressure fluid p1 is set so that the sleeve 1 is inflated to eliminate the interference with the arbor 2 (that is, the central portion 2a). The pressure of the high-pressure fluid p1 is, for example, 500 to 1000 kg / cm ² or may be higher. With this configuration, the sleeve 1 can be supported so as to be axially movable relative to the arbor 2 by supplying the high-pressure fluid p1, and the sleeve 1 and the arbor 2 can be integrated by discharging the high-pressure fluid p1.
[0019]
The shape control roll apparatus of FIG. 1 is used as follows. First, a high-pressure fluid is applied between the sleeve 1 and the arbor 2 from the liquid groove 14 through the solenoid valve 11 from the high-pressure generator 16 to allow the sleeve 1 to slide. On the other hand, the sleeve 1 is moved in the axial direction by applying pressure to one of the liquid chambers 15 from the low pressure generator 17 through the solenoid valve 12. The amount of movement of the sleeve 1 is detected by the position detector 5, and the left and right positions are obtained by signals S1 and S2. Further, the reference signal of the sleeve 1 is given as a signal S3, the solenoid valves 11 and 12 are operated by the calculation function of the control device 13, and the sleeve 1 is moved and held at a desired position. When the sleeve 1 is not moved, the sleeve 1 and the arbor 2 can be integrated by removing the hydraulic pressures p1, p2, and p3.
[0020]
That is, by supplying the high-pressure fluid p1 to the outer peripheral surface of the arbor center portion 2a via the rotary joint 6 by the shape control roll device of the present invention described above, the sleeve 1 is inflated and the tightening margin with the arbor 2 is eliminated. 1 can be axially moved with respect to the arbor 2, and in this state, by supplying the low pressure fluids p2 and p3 to either of the liquid chambers 15 at both ends of the sleeve via the low pressure flow path, The sleeve 1 with the initial crown can be shifted in the axial direction as indicated by a two-dot chain line during use of the rolling roll 10 or idling as in the case of a double-axis cylinder.
[0021]
Further, since it is not necessary to prevent the rotation of a key or the like between the sleeve 1 and the arbor 2, the entire roll can be configured substantially uniformly in the circumferential direction, and the rigidity in the circumferential direction of the roll can be substantially uniform. . Further, even if the sleeve 1 with the initial crown is shifted in the axial direction, the arbor 2 does not move in the axial direction and is supported by the bearing 9 at the same position, so that the roll support position does not change due to the roll shift. Further, if the high-pressure fluid p1 is discharged, the sleeve 1 and the arbor 2 are integrated by tightening allowance, so that the roll has high rigidity like the conventional solid roll, and the roll itself is handled as an integral part (replacement, polishing) And the structure and maintenance of the rolling mill can be made as simple as a rolling mill without a roll shift mechanism.
[0022]
The rolling roll 10 can be applied to any type of rolling mill, and can be used as a work roll, a cutting roll or an intermediate roll.
[0023]
FIG. 2 is a diagram showing an example of use of the present invention. In this figure, 21 is an upper roll, 22 is a lower roll, 23 is a material to be rolled, and the upper roll 21 and the lower roll 22 are the above-described shape control roll apparatus of the present invention, and only the sleeve is shifted in the axial direction. It can be done.
In FIG. 2, (A) is a flat plate-shaped crown, (B) is a medium-extended plate-shaped crown, (C) is an ear-extended plate-shaped crown, and (D) moves only the lower roll 22 in one direction. It is a case and it becomes a single stretch. These plate crowns can be determined by roll initial crowns applied in advance and the amount of movement.
[0024]
Of course, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
[0025]
【The invention's effect】
As described above, the shape control roll device of the present invention has the following features. 1. Since the roll itself has a shift mechanism, the structure of the rolling mill is simple. 2. Roll can be exchanged as easily as before. Since there is almost no change in mill rigidity due to roll shift, correction by shift is not necessary to obtain the target plate thickness. When the roll is worn, it is only necessary to newly manufacture the sleeve, which has a great economic effect. 5. When rolling, the sleeve and arbor are depressurized and have a tightening margin so that torque can be transmitted. Roll polishing can be performed by the same method as before because the pressure is released after the sleeve is returned to the neutral position. Since the high-pressure fluid circuit p1 uses the same hydraulic oil as the other hydraulic pressures p2 and p3, they may be mixed in the oil chamber, and 8. Since the mill is a right and left object, the material to be rolled does not meander.
[0026]
That is, the shape control roll device of the present invention can be roll-shifted during use of the rolling roll or idling, and the circumferential rigidity of the roll is substantially uniform, and the roll support position is changed by the roll shift. As with conventional solid rolls, the roll has high rigidity, and the roll itself can be handled as an integral part (replacement, polishing, and driving). It has excellent effects such as being able to be simplified to the same extent.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a shape control roll device according to the present invention.
FIG. 2 is a diagram showing an example of use of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sleeve 2 Arbor 3 End plate 4 Seal packing 5 Position detector 6 Rotary joint 7 Slip ring 8 Roll chock 9 Roll neck bearing 11, 12 Solenoid valve 13 Controller 14 Liquid groove 15 Liquid chamber 16 High pressure generator 17 Low pressure generator 18 O Ring 21 Upper roll 22 Lower roll 23 Rolled material

Claims (3)

A hollow cylindrical sleeve having a cylindrical cavity and an outer peripheral surface with an initial crown, a cylindrical central part shorter than the sleeve and inserted into the cylindrical cavity with a margin, and a bearing extending axially outward from both ends thereof An arbor having a pair of roll shafts supported by the sleeve, a pair of end plates fixed in a watertight manner at both ends of the sleeve, slidably surrounding the roll shaft, and forming a pair of liquid chambers at both ends of the sleeve ; A rolling roll consisting of
The arbor is to distribute the high-pressure line for circulating the communication with the high pressure fluid and an outer peripheral surface of the roll shaft end and arbor central portion respectively communicating end portion and the pair of the liquid chamber of the roll shaft of the low pressure fluid A pair of low-pressure channels,
Further comprising a hydraulic system for supplying and discharging of the high-pressure fluid and low pressure fluid, and a rotary joint for supplying high pressure fluid and low pressure fluid to the roll shaft end portion to rotate from the hydraulic system,
The tightening allowance is that the high pressure fluid is discharged from the outer peripheral surface of the central portion of the arbor, the sleeve and the arbor can be integrated to transmit the torque of the arbor to the sleeve, and the high pressure fluid is transferred to the outer peripheral surface of the central portion of the arbor. Is set to be able to eliminate the allowance while the
The sleeve can be shifted in the axial direction by supplying high-pressure fluid to the outer peripheral surface of the central part of the arbor and supplying the low-pressure fluid to the liquid chambers at both ends of the sleeve while the sleeve is inflated to eliminate the interference with the arbor The shape control roll apparatus characterized by the above-mentioned. The rolling roll includes a position detector attached to the end plate and detecting the position of the sleeve,
The shape control roll device according to claim 1, further comprising a slip ring that extracts a detection signal of the position detector to the outside, and a control device that controls the high-pressure fluid and the low-pressure fluid based on the detection signal. Having a plurality of liquid extending slots in the outer peripheral surface of the arbor central portion in the circumferential direction, shape control roll apparatus according to claim 1 or 2, characterized in that.

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