JPH06277723A - Roll width adjusting device - Google Patents

Abstract

PURPOSE:To enlarge braking power in the axial direction of a roll and to simplify the structure. CONSTITUTION:An adjusting sleeve 14 on which a 2nd roll 7 is fixed is provided slidably in the axial direction on the side of a working end part of an arbor 11 which is provided with a fixed 1st roll 6 and slidable in the axial direction and a 1st adjusting mechanism 23 in which the position of the 2nd roll 7 can be adjusted freely by sliding an adjusting sleeve 14 is provided at the working end part of the adjusting sleeve 14. There is provided a piston part wherein a 1st oil room 20 is formed between the arbor 11 and the guide axis 19 which is put slidably on the arbor 11 on the working side of the adjusting sleeve 14 and a 2nd oil room 21 is formed between the arbor 11 and a shut-off nut member 22 fixed to the guide axis 19. A 2nd adjusting mechanism 47 is installed to adjust the position of the 1st roll 6 to the 2nd roll 7 by controlling a quantity of hydraulic oil of the 1st oil room 20 and the 2nd oil room 21 and a position controller 48 is installed to actuate the 2nd adjusting mechanism 47 in accordance with a signal of a position detecting cylinder 35 to detect a deviation of the 1st roll 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll width adjusting device in, for example, an H-section steel universal rolling machine or roller straightening machine.

[0002]

2. Description of the Related Art Conventionally, a roll width adjusting device disclosed in, for example, Japanese Utility Model Laid-Open No. 3-106201 is known as the main device. This is an adjusting device consisting of a screw mechanism and a gear mechanism provided on the outside of a chock with rolls, in which the left and right rolling or straightening rolls are movably arranged in the roll shaft via sleeves respectively in the axial direction of the roll shaft. The sleeve is moved in the axial direction to position the roll, and the fixing device provided at the end of the roll shaft fixes the sleeve to the roll shaft.

[0003]

However, in the above roll width adjusting device, if the H-section steel is rolled and straightened by applying a rolling load larger than the normal rolling load in order to reduce the number of rolling passes, It was difficult to fix the sleeve with the fixing device, and it was necessary to increase the size of the fixing device to obtain a larger braking force. Further, since the widths of the left and right rolls are adjusted separately from both sides of the roll shaft, two adjusting devices and two fixing devices are required for one roll shaft, and the number of parts is large, resulting in a complicated mechanism and high cost. There was a problem that became.

An object of the present invention is to solve the above problems and to provide a roll width adjusting device having a large braking force in the axial direction of the roll and a simple structure.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention rotatably drives one end of a central shaft that is rotatable in a direction orthogonal to a pass line and is slidable in an axial direction. The device is connected and the first end is attached to one end of this central shaft.
While the roll is fixed, an adjusting sleeve having the second roll fixed to the other end is slidably fitted in the axial direction, and the guide shaft is extended to the axial center position of the other end of the central shaft. A cylinder rod portion slidably fitted on the guide shaft is provided on the other end side of the sleeve to form a first oil chamber between the center shaft and the cylinder rod portion, and the guide shaft is provided on the other end side of the cylinder rod portion of the sleeve. A cylinder member is formed with a predetermined space formed therein, and a closing member that slidably fits into the cylinder portion and forms a second oil chamber between the cylinder rod portion is attached to the guide shaft. A first adjusting mechanism that slides the first roll in the axial direction through an adjusting sleeve is provided on the other end side, and a switching valve adjusts the amount of pressure oil supplied to the first oil chamber and the second oil chamber. The first b Providing the second adjusting mechanism for adjusting the Le position, is provided with a position control device for operating said second adjustment mechanism on the basis of the detected value of the detector for detecting a movement in the axial direction of the central axis.

[0006]

In the above structure, when a high-pressure lower force is applied to the rolled material or the straightening material by the first roll and the second roll during the rolling or straightening work, the first roll and the second roll are attached to the pass line side, respectively. A reaction force that urges the first roll is generated, and the reaction force that urges the first roll to the pass line side compresses the first oil chamber via the central axis, while the reaction force that urges the second roll to the pass line side is generated. The first oil chamber is compressed via the cylinder rod portion of the adjusting sleeve, and these reaction forces are supported by the hydraulic pressure of the first oil chamber. When an excessive reaction force is generated, the first oil chamber is compressed and the central axis slides to the other end side (the adjustment sleeve side is supported by the first adjustment mechanism), which detects the position. The second adjusting mechanism is operated by the position control device after being detected by the device to supply pressure oil to the first oil chamber to quickly return the first roll to the original position.

When adjusting the roll interval, the first adjusting mechanism is operated with the movement of the pressure oil in the first oil chamber and the second oil chamber stopped, and the sleeve is slid in the axial direction. When the second roll is slid in the axial direction and moved to the set position, the central shaft slides in the axial direction through the first oil chamber and the second oil chamber, and the first roll moves in the same direction. Next, the switching valve is operated by the second adjusting mechanism to operate the first adjusting valve.
The pressure oil in the oil chamber and the second oil chamber is supplied and discharged, and the first roll is moved to the set position via the central shaft. This makes the first
The roll and the second roll can be positioned and the roll width can be set. The first adjusting mechanism and the second adjusting mechanism can be operated at the same time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, reference numeral 1 denotes an upper horizontal roll 2 and a lower horizontal roll 3 rotatably arranged around a horizontal axis O orthogonal to the pass line P, and rotatably arranged around a vertical axis perpendicular to the pass line P. Left and right flange rolls 4, 5
Since the upper horizontal roll 2 and the lower horizontal roll 3 have the same structure in the H-shaped steel that is rolled and straightened by and, only the lower horizontal roll 3 will be described here. The lower horizontal roll 3 is provided with a first roll 6 and a second roll 7 on both sides of the pass line P, and can be positioned and fixed by a roll width adjusting device provided on the lower horizontal roll 3.

As shown in FIGS. 1 to 3, the arbor shaft (center shaft) 11 to which the first roll 6 is fixed via a fixing sleeve 12 has a universal joint 10 at one end (hereinafter referred to as drive side). A rotation drive motor is interlocked and coupled via the, and an adjusting sleeve 14 is externally fitted to the other end side (hereinafter referred to as the working side) via a spline 13 so as to be slidable in the axial center O direction. The second roll 7 is externally fitted and fixed to the inner end portion of the adjusting sleeve 14, and the arbor shaft 11
Is rotatably supported by a drive side roll chock 15 via a drive side roll neck bearing 16 and slidable in the direction of the axis O, and the work side roll chock 1
An adjusting sleeve 14 is rotatably supported by a work-side roll neck bearing 18 so as to be slidable in the direction of the axis O.

A guide shaft 19 extends from the working end of the arbor shaft 11 at the axial center O, and the working sleeve of the adjusting sleeve 14 has a cylinder rod slidably fitted on the guide shaft 19. The end portion piston portion 11a of the arbor shaft 11 is formed in the large diameter cylinder portion 14b by forming the portion 14a.
A first oil chamber 20 is formed between and the cylinder rod portion 14a. Further, on the working side of the cylinder rod portion 14a of the adjusting sleeve 14, an annular small-diameter cylinder portion 14c is formed in the guide shaft 19 with a predetermined space therebetween.
A closing nut member (closing member) 22 having an outer peripheral portion slidably fitted into the small-diameter cylinder portion 14b to form a second oil chamber 21 with the cylinder rod portion 14a is attached and fixed to the cylinder 9.

A second roll 7 is slid on the working-side outer peripheral portion of the adjusting sleeve 14 in the direction of the axis O through the adjusting sleeve 14, and the first oil chamber 20 and the second oil chamber 20
A first adjusting mechanism 23 that adjusts the roll position with respect to the pass line P by sliding the first roll 6 in the axial center O direction via the oil chamber 21 and the arbor shaft 11 is provided.
That is, in the first adjusting mechanism 23, the working housing 25 is externally fitted to the outer peripheral portion of the cylinder rod portion 14a via the thrust bearing 24, and the feed male screw portion 25a on the outer periphery of the working housing 25 and the female screw portion on the inner peripheral portion are fed. 26a is formed and a ring gear 26 whose movement is restricted in the direction of the axis O is screwed to the work side roll chock 17. An adjusting pinion 27 that meshes with a gear portion formed on the outer periphery of the ring gear 26 is interlocked with an output shaft of an adjusting motor 28, and the adjusting motor 28 causes the working housing 25 to pass through the ring gear 26 and the axis O. Direction, the adjustment sleeve 14 is slid in the direction of the axis O through the thrust bearing 24. Two
Reference numeral 9 is a thrust ring and a fixing nut for fixing the thrust bearing 24 via the spacer ring 30.

The guide shaft 19 is provided with oil supply holes 31 and 32 which communicate with the first oil chamber 20 and the second oil chamber 21, respectively, and a rotary joint 33 provided at the outer end of the guide shaft 19 is used. It is connected to an external hydraulic unit 34. Reference numeral 35 denotes a position detection cylinder (position detector) provided on the rotary joint 33. The position detection cylinder 33 brings the detection roll 35a at the tip of the piston rod into contact with the outer end surface of the adjustment sleeve 14 so that the position of the arbor shaft 11 is reduced. The relative position of the adjusting sleeve 14 in the direction of the axis O,
That is, the relative position between the first roll 6 and the second roll 7 can be detected.

As shown in FIG. 3, the hydraulic unit 34 compresses the oil in the oil tank 41 with a pump 42 to generate pressure oil, adjusts the oil pressure to a predetermined oil pressure with a pressure setter 43, and controls the servo valve ( It connects to the rotary joint 33 from the hydraulic pipes 45 and 46 via the switching valve) 44, and supplies the hydraulic pressure to the first oil chamber 20 and the second oil chamber 21 through the oil supply holes 31 and 32, respectively. is there.

The hydraulic unit 34 and the first oil chamber 20 and the second oil chamber 21 constitute a second adjusting mechanism 47,
The adjusting mechanism 23 and the second adjusting mechanism 47 are operated by the controller 49 of the position controller 48 based on the data from the setter 50. Further, the position control device 48 is
In order to control the roller position during work, a control operation for operating the second adjustment mechanism 47 can be performed based on the signal from the position detection cylinder 35. That is, the position detection cylinder 35 detects the amount of withdrawal of the arbor shaft 11, and the controller 49 sends a valve actuation signal to the servo valve 44 via the servo amplifier 52 based on the detection value input via the signal converter 51. Output from the hydraulic unit 34
Pressure oil can be supplied to and discharged from the oil chamber 20 and the second oil chamber 21 to control the position of the first roll 6 via the arbor shaft 11.

In the above structure, a high-pressure lower force is applied during the rolling or straightening operation of the H-section steel 1, and a large rolling reaction force or straightening reaction force in the thrust direction is applied to the first roll 6 and the second roll 7. In this case, the reaction force applied to the first roll 6 compresses the pressure oil in the first oil chamber 20 at the outer end portion of the arbor shaft 11, while the pressure applied to the second roll 7 is applied to the adjustment sleeve 14. The cylinder rod portion 14a compresses the pressure oil in the first oil chamber 20, is supported and balanced by the hydraulic pressure of the first oil chamber 20, and the roll interval is maintained.

If an excessive reaction force is applied by the first roll 6 and / or the second roll 7, the first oil chamber 20 may be compressed and the arbor shaft 11 may be displaced toward the working side. Then, the position detection cylinder 35 detects the deviation, and an operation signal is output from the controller 49 to the servo valve 44 based on the detected value, and a predetermined amount of pressure oil is sent to the first oil chamber 20 and the second oil chamber 21. The pressure oil can be discharged, the first oil chamber 20 can be advanced, and the arbor shaft 11, that is, the first roll 6 can be quickly returned to the original position.

When the type of H-section steel 1 is changed, for example, the distance between the first roll 6 and the second roll 7 is set to 4
When expanding by mm, first, an operation signal is input from the roll width setting device 50 to the controller 49, and the first adjustment mechanism 2
3 operates the adjusting motor 28 to rotate the ring gear 26 by the adjusting pinion 27, and the feed screw portions 26a, 2
By the action of 5a, the adjusting sleeve 14 is slid to the working side by 2 mm, and the second roll 7 is first positioned at the set position. Next, the servo valve 44 is operated to supply a predetermined amount of pressure oil to the first oil chamber 20, discharge the pressure oil from the second oil chamber 21, and slide the arbor shaft 11 toward the drive side by 4 mm to move the first oil.
Place the roll 6 in the set position. This completes the adjustment of the roll interval. The first adjusting mechanism 23 and the second adjusting mechanism 47 can be operated simultaneously.

[0018]

As described above, according to the present invention, since the central shaft provided with the first roll and the adjusting sleeve provided with the second roll are provided through the two oil chambers, the rolling reaction is caused by the rolling force. When a force or a straightening reaction force is applied to the first roll and the second roll in the direction approaching the pass line, respectively, these reaction forces are applied in the direction compressing the first oil chamber via the arbor shaft and the adjusting sleeve, respectively. Therefore, both reaction forces can be supported by the hydraulic pressure in the first oil chamber, and a large braking force can be secured. In addition, even if the roll receives a reaction force that is larger than the hydraulic pressure in the first oil chamber and the first oil chamber is compressed and the first roll moves to the other end side, this is detected by the position detector and the The two adjusting mechanism can operate the switching valve to supply the pressure oil to the first oil chamber, and instantly return the first roll to the original position to maintain the accurate roll width.

Since the first adjusting mechanism for sliding the adjusting sleeve in the axial direction and the second adjusting mechanism for sliding the central axis in the axial direction with respect to the adjusting sleeve are provided side by side, the other end side of the roll shaft is provided. You can slide the 1st roll and the 2nd roll respectively to adjust the roll interval. It is not necessary to provide an adjusting mechanism or a braking mechanism for each roll as in the past, so the number of parts can be reduced. The manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a horizontal lower roll shaft showing an embodiment of a roll width adjusting device according to the present invention.

FIG. 2 is an enlarged sectional view of a main part of the roll shaft.

FIG. 3 is a configuration diagram showing a position control device and a hydraulic unit of the roll width adjusting device.

FIG. 4 is a front view showing the upper and lower horizontal rolls.

[Explanation of symbols]

 P Pass line O Roll shaft center 1 H-shaped steel 3 Lower horizontal roll 6 1st roll 7 2nd roll 11 Arbor shaft 14 Adjusting sleeve 14a Cylinder rod part 14b Large diameter cylinder part 14c Small diameter cylinder part 15 Chock with drive side roll 16 Drive side roll neck bearing 17 Work side roll chock 18 Work side roll neck bearing 19 Guide shaft 20 1st oil chamber 21 2nd oil chamber 22 Closing nut member 23 1st adjusting mechanism 24 Thrust bearing 25 Working housing 25a Feed male screw part 26 Ring gear 26a Feed female thread 27 Adjustment pinion 28 Adjustment motor 33 Rotary joint 34 Hydraulic unit 35 Position detection cylinder 44 Servo valve 47 Second adjustment mechanism 48 Position controller 49 Controller

Front Page Continuation (72) Inventor Takeshi Yamada 5-3-8, Nishikujo 5-3, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims] 1. A rotary drive device is connected to one end of a central shaft that is rotatable in a direction orthogonal to a pass line and is slidable in an axial direction, and a first drive shaft is connected to one end of the central shaft.
While the roll is fixed, an adjusting sleeve having the second roll fixed to the other end is slidably fitted in the axial direction, and the guide shaft is extended to the axial center position of the other end of the central shaft. A cylinder rod portion slidably fitted on the guide shaft is provided on the other end side of the sleeve to form a first oil chamber between the center shaft and the cylinder rod portion, and the guide shaft is provided on the other end side of the cylinder rod portion of the sleeve. A cylinder member is formed with a predetermined space formed therein, and a closing member that slidably fits into the cylinder portion and forms a second oil chamber between the cylinder rod portion is attached to the guide shaft. A first adjusting mechanism that slides the first roll in the axial direction through an adjusting sleeve is provided on the other end side, and a switching valve adjusts the amount of pressure oil supplied to the first oil chamber and the second oil chamber. The first b A second adjusting mechanism for adjusting the position of the central axis, and a position control device for operating the second adjusting mechanism based on a detection value of a detector for detecting the movement of the central axis in the axial direction. Roll width adjusting device.