JPH10192925A - Device for adjusting roll width - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the interval between rolls which are provided on a spindle by large strokes. SOLUTION: A fixed roll 5A is provided through a roll sleeve 6 on the spindle 2 which is rotationally driven and also a movable roll 5 and passive thread part 13a are provided on a slide sleeve 13 which is freely slidable only in the axial direction fit on a roll sleeve 6. A connectable/separable adjusting sleeve 18 is provided through a sleeve connecting/separating means 31 having the connecting teeth of a gear ring 33 which is arranged on a supporting sleeve 16 and locking teeth which is freely lockable and unlockable with the connecting teeth on the supporting sleeve 16 which is fixed to the roll sleeve 6. Simultaneously, a driving thread part 18a which is fit in the passive thread part 13a is formed on this adjusting sleeve 18 and, by fitting the acting body 52 at the tip into the locking hole of the adjusting sleeve 18 with a clamp arm 51 which is freely rotatably supported with an external bearing frame 3, the detent of the adjusting sleeve 18 is executed and also the locking teeth is separated from the connecting teeth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an H-shaped steel, an I-shaped steel,
The present invention relates to a roll width adjusting device that adjusts an interval between rolls provided on a main shaft in a rolling device and a straightening device for rolling and straightening a work such as a sheet pile.

[0002]

2. Description of the Related Art The present inventors have disclosed, for example, Japanese Utility Model Application No.
Japanese Patent Publication No. 0902 proposes a roll width adjusting device capable of adjusting the roll width during rotation of a main shaft corresponding to the width of a work such as a constant outer H-beam.

[0003]

However, the above-mentioned prior art is advantageous in that it is possible to adjust the width of a work having a slightly different width, such as an externally fixed H-section steel, even while the main spindle is rotating. Since the strokes of the clamp cylinder disposed between the rolls and the slide cylinder for sliding the movable roll are restricted, there is a problem that the adjustment range of the roll width is small.

An object of the present invention is to provide a roll width adjusting device capable of adjusting the width of a roll provided on a main shaft with a large stroke by solving the above problems. .

[0005]

In order to achieve the above object, the invention according to claim 1 of the present invention comprises a fixed roll fixed to a main shaft that is driven to rotate, and an outer roll slidably mounted on the main shaft in the axial direction. The fitted movable roll, a roll rotation restricting means for preventing the movable roll from rotating, a passive screw portion formed on the movable roll side, and a rotatable outer fit on the main shaft to fit the passive screw portion. An adjusting sleeve having a drive screw portion; a sleeve fixing releasing means capable of connecting and separating the adjusting sleeve and the main shaft; and a sleeve locking means for preventing the adjusting sleeve from rotating when the adjusting sleeve is separated by the sleeve fixing releasing means. When adjusting the roll width, the adjusting sleeve and the main shaft are separated by the sleeve fixing releasing means, and the adjusting sleeve is prevented from rotating by the sleeve locking means. By rotating the movable roll, those configured to slide the movable roll in the axial direction by the action of the drive screw section and the passive thread portion.

According to the above configuration, the movable roll is slid in the axial direction by the engagement between the passive screw portion of the movable roll and the drive screw portion of the adjustment sleeve, so that the adjustment stroke of the movable roll is increased. be able to. In addition, since only the adjusting sleeve is free by the sleeve fixing releasing means and is prevented from rotating by the sleeve locking means, and the movable roll side is rotated via the main shaft, the screw portion is actuated, so that an actuator for width adjustment is unnecessary, The whole spindle can be made compact and the adjustment stroke can be made large.

According to a second aspect of the present invention, there is provided a gear ring which is mounted on the sleeve fixing releasing means having the above-mentioned structure via a rotation permitting mechanism rotatable on a main shaft side within a predetermined angle range and has connecting teeth formed all around. A locking tooth body having locking teeth disposed on the adjusting sleeve and capable of meshing with the connecting teeth;
An actuating body for driving the locking tooth body in a direction in which the locking tooth is disengaged.

According to the above construction, since the fixing between the main shaft and the adjusting sleeve is made up of the connecting teeth formed on the entire circumference and the locking teeth meshing with the connecting teeth, the adjusting sleeve is connected and fixed to the main shaft at any angular position. The roll width can be set at an arbitrary position with high precision. Further, since the gear ring is provided on the main shaft side via the rotation permitting mechanism, even if the locking teeth are displaced, they can be reliably engaged with the connecting teeth.

Further, the invention according to claim 3 is characterized in that the sleeve locking means having the above-mentioned structure includes a clamp arm which can move back and forth from the bearing side of the main shaft to the adjustment sleeve side, an arm driving device which moves the clamp arm back and forth, An actuating body provided at the distal end of the clamp arm, wherein the actuating body is fitted into a locking hole of the adjusting sleeve so that the adjusting sleeve can be prevented from rotating, and the locking tooth body is driven. This is also used as the sleeve fixing releasing means.

[0010] According to the above configuration, the rotation of the adjusting sleeve and the disengagement and disengagement of the locking teeth can be commonly performed by the operating body provided on the clamp arm by driving the arm driving device. The apparatus can be simplified, and a drive device such as an actuator is not required on the spindle side, so that the entire spindle can be made compact and the adjustment stroke can be increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Here, an embodiment of a roll width adjusting device provided on a main shaft of a roller straightening machine according to the present invention will be described with reference to FIGS.

As shown in FIG. 2, a fixed bearing frame 1 and an external bearing frame 3 are arranged on both sides of a pass line of a work W so as to face each other. A plurality of spindles 2 are rotatably supported. These spindles 2 are rotatably driven by a spindle drive motor (not shown) provided on the fixed bearing frame 1, and are configured to be adjustable in pitch and height by an adjustment mechanism (not shown). Are rotatably and detachably supported by the external bearings 4 of the external bearing frame 3, respectively.

The fixed bearing frame 1 is provided with a shaft adjusting device (not shown) for adjusting the position of the main shaft 2 in the axial direction, and is mounted on the main shaft 2 via a roll sleeve 6 for correction. Sleeve attaching / detaching device 7 capable of inserting and removing the fixed roll 5A and the movable roll 5B together with the roll sleeve 6.
And a roll width adjusting device 8 according to the present invention for adjusting the position of the movable roll 5B.

As shown in FIG. 1, a fixed roll 5A is externally fixed via a second key 11 to a roll sleeve 6 which is externally fitted to the main shaft 2 via a first key 10.
A slide sleeve 13 is provided on the roll sleeve 6 via a third key 12 which is a roll rotation restricting means for preventing rotation.
Are slidably fitted in the axial direction of the main shaft 2,
A movable roll 5B is externally fixed to the slide sleeve 13 via a fourth key 14.

The sleeve attaching / detaching device 7 includes a slide shaft 23 that is provided in a shaft hole 21 formed in a shaft center portion of the main shaft 2 on the distal end side via a screw mechanism 22 so as to be able to move back and forth. A drive cylinder 24 fitted externally so as to be slidable only in the axial direction via a spline, a wedge member 25 attached to the slide shaft 23, and radially formed around the shaft hole 21 of the main shaft 2 every 90 °. Four pin holes 26
A cotter pin 27 which is inserted into the cotter pin 27 and a conversion member 28 interposed between the tapered surface of the wedge member 25 and the cotter pin 27. A tapered surface 27a that is in contact with the end surface is formed.

Therefore, by rotating the drive cylinder 24 by connecting the rotation mechanism of the roll changing device (not shown) from outside the end of the main spindle 2 in a state where the main spindle 2 is stopped, the driving cylinder 24 is rotated via the screw mechanism 22. Then, the slide shaft 23 is moved in the axial direction, and the cotter pin 27 is extended and retracted by the action of the wedge member 25 and the conversion member 28, and the roll sleeve 6 is moved between the tapered surface 27 a of the cotter pin 27 and the receiving portion 2 a of the main shaft 2. Can be fixed or released. In addition, roll 5
The roll sleeve 6 with A and 5B is pulled out and loaded by the roll exchanging device. Reference numeral 29 denotes a locking cylinder that is built into the tip of the main shaft 2 and that prevents the roll sleeve 6 from coming off during replacement.

Next, the roll width adjusting device 8 will be described. FIG.
As shown in FIG. 3, a passive screw portion 13a is formed on the outer peripheral surface on the outer end side of the slide sleeve 13 over a predetermined length. A support sleeve 16 is fixed to the outer end of the roll sleeve 6 via an inner sleeve 15, and an adjustment sleeve 18 is rotatably supported on the support sleeve 16 via a thrust ring 17. A drive screw portion 18a that fits into the passive screw portion 13a is formed on the inner peripheral surface of the inner end of the adjustment sleeve 18.

As shown in FIGS. 4 and 5, a sleeve connection / separation means 31 is interposed between the support sleeve 16 fixed to the tip of the roll sleeve 6 and the adjustment sleeve 18. In the sleeve connection / separation means 31, a gear ring 33 serving as a connection tooth body is disposed on the support sleeve 16 via a rotation permitting mechanism 32, and a connection tooth 33a having a tooth tip directed to an axis is formed on the gear ring 33 over the entire circumference. Have been.
Then, the locking teeth 34 meshing with the connecting teeth 33a are attached to the rod pins 34 which are the locking teeth provided on the adjustment sleeve 18.
a is formed.

The rotation permitting mechanism 32 permits displacement of the connecting teeth 33a during engagement. That is, as shown in FIG. 3, the locking block 41 is located at a 180 ° symmetric position of the gear ring 33 rotatably disposed on the support sleeve 16.
Each of the locking blocks 41 has a U-shaped groove 41a formed in a tangential direction on the outer surface thereof. The support sleeve 16 is formed with a housing recess 42 that allows the rotation of the locking block 41 within a predetermined angle (2 × α °) range. Limiting walls 42a, 42a serving as a limit are formed.
The U-shaped groove 41 of the locking block 41 is
A guide rod 43 into which a is loosely fitted is disposed in a tangential direction. Further, on both sides of the locking block 41, coil springs 44, 44 for elastically supporting the locking block 41 at the center position of the accommodation recess 42 are interposed.

On the other hand, the adjusting sleeve 18 is provided with
As shown in FIG.
Locking holes 35 are formed in the radial direction at separated positions, and rod pins 34 are slidably received in the locking holes 35. The locking pin 34a of the rod pin 34 is changed to the connecting tooth 33 by a coil spring 36 as an urging means.
It is urged to the outer peripheral side that fits into the a.

Therefore, as shown in FIG.
Even if the adjusting sleeve 18 stops at a position where the engaging pin 3a does not mesh with the locking tooth 34a, the rod pin 3
4, the gear ring 33 is rotated against the coil spring 44 by the tapered tips of the locking teeth 34a and the connecting teeth 33a, and the locking teeth 34a and the connecting teeth 33a mesh well. Can be.

When the main shaft 2 is rotated in the state where no load is applied, the locking block 41 is held at the center of the storage recess 42 by the action of the coil spring 44, and when the straightening is performed, the locking block 41 is held by the load applied to the roll 5B. The rotation of the movable roll 5B via the driving screw portion 18a and the passive screw portion 13a due to this rotation is limited by the allowable width of the product. It is within the range of the error.

As shown in FIG. 1, the outer bearing frame 3 is provided with a clamp arm 51 which forms a sleeve locking means for preventing the adjustment sleeve 18 from rotating, and a tip end of the clamp arm 51 is engaged with a connecting tooth 33a. An operating body 52 that meshes with and separates from the pawl 34a is provided. That is, the clamp arm 51 is fixed to an output shaft of an arm rotation motor 53 which is an arm driving device whose base end is fixed to the external bearing frame 3. The rod pin 34 is formed so as to be freely inserted into and removed from the locking hole 37 and is rotated by the rotation of the clamp arm 51.
Can be pushed down toward the axis.

The sleeve locking means is also used as a component of the sleeve fixing releasing means, and the rod pin 34 is driven by the sleeve locking means including the arm rotation motor 53, the clamp arm 51 and the operating body 52. The adjustment sleeve 18 can be fixed to and separated from the main shaft 2.

In the above configuration, when adjusting the roll width, the arm drive motor 53 is driven to rotate the clamp arm 51 toward the adjustment sleeve 18 so that the operating body 52 is brought into contact with the outer peripheral surface of the adjustment sleeve 18. By rotating the main shaft 2 slowly, the operating body 52 is
7, the main shaft 2 is stopped, and the adjustment sleeve 18 is locked. By further rotating the clamp arm 51 and pushing the operating body 52 into the locking hole 37, the rod pin 38 is pushed down to disengage the locking tooth 34a from the connecting tooth 33a, and the support sleeve 16 and the adjustment sleeve 18 are separated. Let it. Next, the main shaft 2 is rotated in a state where the adjusting sleeve 18 is locked and prevented from rotating by the operating body 52, and the slide sleeve 13 is slid by the action of the drive screw portion 18a and the passive screw portion 13a to move the movable roll 5B to the axial center. Direction to adjust the roll spacing. After the adjustment, by returning the clamp arm 51 and retreating the operating body 52, the locking teeth 34 are engaged with the connecting teeth 33a, so that the adjusting sleeve 18 and the supporting sleeve 13 are connected and integrated with the roll sleeve 6. You.

According to the above embodiment, the rod pin 34 is provided by the clamp arm 51 provided on the external bearing frame 3.
Is driven to separate the adjustment sleeve 18 and the support sleeve 16 and the adjustment sleeve 18 is stopped from rotating.
Since the width of the movable roll 5 is adjusted by driving the main shaft 2, an actuator for adjusting the width is not required on the main shaft 2 side. Further, an arm rotation motor 53 provided on the external bearing frame 3
By rotating the clamp arm 51, the engagement and disengagement of the locking teeth 34a and the rotation prevention of the adjustment sleeve 18 can be performed simultaneously, so that the entire roll width adjustment device 8 can be downsized and the structure can be simplified. can do. Further, since the connecting teeth 33a are formed over the entire circumference of the gear ring 33, the locking teeth 34a can be engaged and fixed at all the rotating positions of the adjusting sleeve 18, and the roll interval can be adjusted with high precision. Can be set. Furthermore, since the gear ring 33 can rotate within a range in which the locking block 41 can move between the regulating walls 42a by the rotation permitting mechanism 32,
Even if the connecting teeth 33a are stopped at positions where they do not mesh with the locking teeth 34a, the gear ring 33 can be meshed well by rotation.

[0027]

As described above, according to the first aspect of the present invention, the movable roll is slid in the axial direction by the engagement between the passive screw portion of the movable roll and the drive screw portion of the adjusting sleeve. With this configuration, the adjustment stroke of the movable roll can be increased. In addition, since only the adjusting sleeve is free by the sleeve fixing releasing means and is prevented from rotating by the sleeve locking means, and the movable roll side is rotated via the main shaft, the screw portion is actuated, so that an actuator for width adjustment is unnecessary, The whole spindle can be made compact and the adjustment stroke can be made large.

According to the second aspect of the present invention, the fixing between the main shaft and the adjusting sleeve is made up of the connecting teeth formed on the entire circumference and the locking teeth meshing with the connecting teeth. However, it can be connected and fixed to the main shaft, and the roll width can be set at an arbitrary position with high accuracy. Further, since the gear ring is provided on the main shaft side via the rotation permitting mechanism, even if the locking teeth are displaced, they can be reliably engaged with the connecting teeth.

According to the third aspect of the present invention, the rotation of the adjusting sleeve and the disengagement and disengagement of the locking teeth are commonly performed by the operating body provided on the clamp arm by driving the arm driving device. Therefore, the device can be simplified, and a drive device such as an actuator is not required on the spindle side, so that the entire spindle can be made compact and the adjustment stroke can be increased.

[Brief description of the drawings]

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

FIG. 2 is a schematic rear view of a roller straightening machine provided with the roll width adjusting device.

FIG. 3 is a partial cross-sectional view showing a rotation permitting mechanism of the roll width adjusting device.

FIG. 4 is a partial longitudinal sectional view showing a connected state of a sleeve connecting / disconnecting means of the roll width adjusting device.

FIG. 5 is a partial longitudinal sectional view showing a separated state of a sleeve connecting / disconnecting means of the roll width adjusting device.

FIG. 6 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed bearing frame 2 Main shaft 3 External bearing frame 4 External bearing 5A Fixed roll 5B Movable roll 6 Roll sleeve 7 Sleeve attaching / detaching device 8 Roll width adjusting device 12 Third key (roll rotation restricting means) 13 Slide sleeve 13a Passive screw portion 16 Support Sleeve 18 Adjustment sleeve 18a Drive screw part 31 Sleeve connection / separation means 32 Rotation permitting mechanism 33 Gear ring 33a Connection tooth 34 Rod pin (locking tooth body) 34a Locking tooth 35 Lock hole 41 Lock block 42a Restriction wall 51 Clamp arm 52 Operation Body 53 Arm rotation motor (Arm drive device)

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Yasuhiro Yamamoto 5-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation (72) Inventor Kenji Sudo 5-chome, Nishikujo, Konohana-ku, Osaka-shi, Osaka No. 3-28 Inside Hitachi Zosen Corporation (72) Inventor Ichizo Taguchi 5-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka Prefecture Inside of Hitachi Zosen Corporation (72) Inventor Masaru Nagao Nishi, Konohana-ku, Osaka-shi, Osaka Kujo 5-Chome 3-28 Hitachi Zosen Corporation

Claims (3)

[Claims] A fixed roll fixed to a main shaft that is driven to rotate; a movable roll externally slidably fitted to the main shaft in an axial direction; roll rotation restricting means for stopping the movable roll from rotating; An adjusting sleeve having a driven screw portion formed on the roll side, a driving screw portion rotatably fitted to the main shaft and fitted to the passive screw portion, and a sleeve fixing capable of connecting and separating the adjusting sleeve and the main shaft. Releasing means, and sleeve locking means for stopping the adjusting sleeve from rotating when the adjusting sleeve is separated by the sleeve fixing releasing means. The adjusting sleeve and the main shaft are separated by the sleeve fixing releasing means when the roll width is adjusted, and the sleeve is locked. By rotating the movable roll via the main shaft after the rotation of the adjusting sleeve is stopped by means, it is movable by the action of the drive screw and the passive screw. A roll width adjusting device configured to slide a roll in an axial direction. 2. The gear fixing device according to claim 1, wherein the sleeve fixing release means is mounted on a main shaft side via a rotation permitting mechanism rotatable within a predetermined angle range, and is provided on the adjustment sleeve and has the connecting teeth formed thereon. 2. A locking tooth body having a locking tooth meshable with a tooth, and an operating body for driving the locking tooth body in a direction in which the locking tooth is disengaged.
The roll width adjusting device described in the above. 3. The sleeve locking means is provided on a clamp arm which can move back and forth from the bearing side of the main shaft to the adjustment sleeve side, an arm driving device for moving the clamp arm back and forth, and a tip end of the clamp arm. An actuating body, wherein the actuating body is fitted to a locking hole of the adjusting sleeve so that the adjusting sleeve can be prevented from rotating, and is also used as the sleeve fixing releasing means for driving a locking tooth body. The roll width adjusting device according to claim 2, wherein: