JP3051044B2 - Roll width adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling device or a straightening device for rolling or straightening an H-beam, an I-beam, a sheet pile, etc., in which the width of a roll provided on a roll shaft corresponding to a workpiece is controlled. The present invention relates to a roll width adjusting device for adjusting.

[0002]

2. Description of the Related Art The present inventor has disclosed, for example, Japanese Utility Model Laid-Open No. 3-120.
No. 902 (Japanese Utility Model Application No. 2-26619, March 1, 1990)
On the 5th), a roll width adjusting device capable of adjusting the roll width during the rotation of the roll shaft was proposed for a work material such as a constant outer H-shaped steel.

[0003]

However, the above-mentioned method is very advantageous for work pieces having slightly different dimensions, such as a constant outer H-shaped steel, because the width can be adjusted even while the roll shaft is rotating. However, since the clamp cylinder disposed between the rolls and the slide cylinder for driving the movable roll are restricted in terms of stroke, there is a problem that the adjustment range of the roll width is narrow.

[0004] It is an object of the present invention to solve the above-mentioned problems and to provide a roll width adjusting device capable of easily adjusting the interval between rolls provided on a roll shaft with a large stroke.

[0005]

In order to solve the above-mentioned problems, a roll width adjusting apparatus according to the present invention comprises a pair of roll shafts each having a fixed roll fitted to the outside through a tapered surface. An inner taper sleeve and an outer taper sleeve are externally fitted, a roll sleeve is externally fitted to the outer taper sleeve, an adjusting male screw portion is formed on the outer peripheral surface of the roll sleeve, and an adjusting female screw portion is formed on the adjusting male screw portion. The width changing sleeve is externally fitted to the roll sleeve via the base member, and the width changing sleeve is connected to a movable roll externally slidably fitted in the roll sleeve in the axial direction so as to prevent the width changing sleeve from rotating. The outer taper sleeve and the roll sleeve are fixed to the roll shaft, and the inner taper sleeve is urged in the axial direction to slide. By providing a sleeve expanding / contracting means capable of expanding / contracting the roll sleeve via the tapered surface and fixing or releasing the movable roll and the width changing roll sleeve to / from the roll shaft, the sleeve expanding / contracting means is released and the sleeve locking member is released. With the width change sleeve stopped,
A roll position adjusting means is provided for sliding the width changing sleeve and the movable roll in the axial direction via the adjusting male screw portion and the adjusting female screw portion by rotation of the roll shaft.

In the above structure, the base end of the roll shaft is rotatably supported by the fixed bearing base, and the tip end of the roll shaft is detachably supported by the movable bearing base.
A return oil chamber and a push oil chamber for sliding the inner taper sleeve in the axial direction are formed at both ends of the inner taper sleeve by the sleeve expanding / contracting means, and hydraulic pressure is supplied to the return oil chamber and the push oil chamber. And a coupling for supplying oil pressure from a hydraulic device to these oil supply holes is provided at the base end of the roll shaft.

[0007]

In the above construction, in the roll width changing operation, the rotation of the roll shaft is stopped, the width changing sleeve is prevented from rotating by the sleeve locking member, and then the inner taper sleeve is released from the tapered surface by the sleeve expanding / contracting means. To reduce the diameter of the roll sleeve via the tapered surface, thereby releasing the fixation of the movable roll and the width changing sleeve,
Further, the roll shaft is rotated, and the width changing sleeve and the movable roll are slid in the roll axis direction through the male screw portion for adjusting the roll sleeve and the female screw portion for adjusting the width changing sleeve by the roll position adjusting means, and the position of the movable roll is adjusted. To adjust. After the adjustment, the movable roll and the width changing sleeve are fixed by again sliding the inner tapered sleeve in the pressing direction of the tapered surface by the sleeve expanding / contracting means to expand the diameter of the roll sleeve via the tapered surface.

[0008] Therefore, the interval between the rolls disposed on the roll shaft can be adjusted within the effective length range of the adjusting female screw portion, and the roll width can be easily adjusted with a larger stroke than before. it can.

Further, by providing the hydraulic supply coupling on the fixed bearing base side, the movable bearing base is separated from the roll shaft and the movable roll and the fixed roll are pulled out to the front end side. It is not necessary to change the roll, and the roll can be easily replaced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roll width adjusting device provided on a roll shaft of a roller straightening machine according to the present invention will be described below with reference to the drawings.

1 and 5, reference numeral 1 denotes a driving roll shaft (upper roll shaft) rotatably supported on a fixed bearing base 2 via a main bearing 3, and a base end of the driving roll shaft is fixed to the fixed bearing base 2. In addition to being supported in a holding manner, the distal end is detachably supported by a bearing box 4a of a movable bearing base 4 disposed on a fixed bearing base 2 with a pass line P interposed therebetween.

As shown in FIG. 2, the roll shaft 1 is provided with a shaft adjusting device 5 provided on the base end side to slide the roll shaft 1 in the direction of the axis O, and a pair of single rolls on the front end side. Are fixedly spaced from each other and the fixing ring 9a
A fixed roll 6 fixed to the roll sleeve 9 by
A movable roll 8 composed of a pair of single rolls, which is fitted to the roll sleeve 9 so as to be slidable in the axial direction by the roll width adjusting device 7 and is adjustable to approach / separate from the fixed roll 6, is provided in FIG. The H-section steel W can be straightened in the range of the maximum interval shown in half and the minimum interval shown in half.

The width adjusting device 7 includes a sleeve attaching / detaching means 11 for attaching and detaching the fixed roll 6 and the movable roll 8 to and from the roll shaft 1 together with the roll sleeve 9, and fixing or fixing the rolls 6, 8 and the roll sleeve 9 to the roll shaft 1. Sleeve expanding / contracting means 12 to be released and movable roll 8 released from being fixed
And a roll position adjusting means 13 that slides in the direction of the roll axis O.

That is, an inner tapered sleeve 21 having an outer tapered surface with a larger diameter toward the distal end is formed on the outer peripheral surface of the roll shaft 1 so as to be slidable in the axial direction. An outer tapered sleeve 22 having an inner tapered surface fitted to the tapered surface is fixed at both ends to the roll shaft 1 and externally fitted. The roll sleeve 9 is externally fitted to the outer tapered sleeve 22 and fixed by the sleeve attaching / detaching means 11 built in the tip end side of the roll shaft 1.

The sleeve attaching / detaching means 11 includes a roll shaft 1
An operating shaft 72 movably arranged in the axial direction via a screw portion 71 in a shaft hole 23 formed in the axial center portion of the shaft; a tapered cylinder 24 disposed at a tip end of the operating shaft 72; , Shaft hole 2
Four cotter pins 26 slidably incorporated in four pin holes 25 drilled in the radial direction every 3 to 90 degrees, and these cotter pins 26 and the tapered cylinder 2
A conversion member 27 interposed between the cotter pin 26 and the tapered surface of the cotter pin 4 for converting the variable movement of the wedge member 24 into the reciprocating movement of the cotter pin 26;
An electromagnetic clutch 73 capable of connecting and fixing the operating shaft 72 to the fixed bearing base 2 is provided in the opening of the shaft hole 23 on the base end surface of the roll shaft 1. Therefore, by operating the electromagnetic clutch 73 to fix the operation shaft 72 and rotating the roll shaft 1, the operation shaft 72 is pushed and pulled in the axial direction via the screw portion 71, and the tapered cylinder 24 is moved. The cotter pin 26 is moved back and forth, and the inclined surface thereof is pressed or separated from the leading end surface of the roll sleeve 9, so that the roll sleeve 9 can be fixed or released between the step portion 22 a of the outer tapered sleeve 22.

An oil groove 28 is formed at the center of the inner peripheral surface and the outer peripheral surface of the inner taper sleeve 21. A return oil for driving the inner taper sleeve 21 to the distal end side at the base end side of the inner taper sleeve 21. A chamber 29 is formed, and a push-in oil chamber 30 for driving the inner tapered sleeve 21 to the base end side is formed at the distal end side. The oil groove 28 and the two oil chambers 29 and 30 are provided with a coupling 33 and a roll shaft, which are provided detachably at the tip of the roll shaft 1 on the movable bearing base 3 side from a hydraulic device 31 provided outside. The oil pressure is supplied through oil supply holes 34A to 34C formed in the inside 1, and the sleeve expanding / contracting means 12 is constituted by the inner and outer tapered sleeves 21 and 22 and a hydraulic drive mechanism.

Accordingly, by supplying oil pressure from the oil supply hole 34A to the oil groove 28, the inner peripheral surface and the outer peripheral surface of the inner tapered sleeve 21 are expanded to reduce frictional resistance, and the inner tapered sleeve 21 slides smoothly. By supplying oil pressure from the oil supply hole 34B to the return oil chamber 29, the inner tapered sleeve 21 is slid to the distal end side to reduce the diameter of the roll sleeve 9 via the outer tapered sleeve 22, and the movable roll 8 and the width described later The fixing of the replacement sleeve 43 is released, and conversely, the pushing oil chamber 30 is inserted through the oil supply hole 34C.
, The inner taper sleeve 21 is slid to the base end side, the diameter of the roll sleeve 9 is increased via the outer taper sleeve 22, and the movable roll 8 and the width changing sleeve 43 can be fixed.

The roll position adjusting means 13 includes an adjusting male screw 41 formed on the base end side of the roll sleeve 9, and an inner adjusting female screw 42 on the inner surface of the adjusting male screw 41. Width changing sleeve 4 fitted externally
3, a locking arm 44 rotatably mounted on the movable bearing base 3 around the tangential axis of the roll shaft 1 as shown in FIG. A sleeve locking tool 47 having a locking / disengaging cylinder 46 capable of engaging and disengaging a locking portion 44a with a plurality of locking grooves 45 formed in the outer peripheral surface of the width changing sleeve 43 in the axial direction, a driving gear 48A and a passive gear 48B. And a roll shaft rotating device (not shown) that also serves as a correction roll driving device that rotates the roll shaft 1 and rotates the roll sleeve 9 via the shaft.

In the case of a driven roll shaft (for example, lower roll shaft 51), as shown by a virtual line in FIG.
A width adjusting roll shaft rotating device 53 for rotating the roll shaft 1 by the width adjusting hydraulic motor 52 is provided.

The operation of changing the width of the fixed roll 6 and the movable roll 8 in the above configuration will be described. (1) Stop the straightener. (2) Next, the engagement / disengagement cylinder 46 of the sleeve locking member 46
Is driven to rotate the locking arm 44 to engage the locking portion 44 a with the locking groove 45 of the width changing sleeve 43, thereby restricting the rotation of the width changing sleeve 43. At this time, if the locking groove 45 does not match the locking portion 44a, the roll shaft 1 is rotated at a low speed by a roll shaft rotating device.

(3) From the hydraulic device 31 to the coupling 33
And oil pressure is supplied to the oil groove 28 through the oil supply hole 34A,
The sliding gap of the inner taper sleeve 21 is enlarged to reduce frictional resistance. Next, the return oil chamber 29 is moved from the oil supply hole 34B.
And the inner taper sleeve 21 is slid to the distal end side. Thus, the movable roll 8 and the width changing sleeve 43 are released without applying the pressing force applied to the roll sleeve 9 in the radially increasing direction via the outer taper ring 22.

(4) After releasing the oil pressure from the oil groove 28 and removing the force pressing the roll sleeve 9 via the outer tapered sleeve 22, the roll shaft 1 is rotated by the roll shaft rotating device.
By rotating at low speed, the adjusting screw portions 41 and 4 are rotated.
By the operation of 2, the width changing sleeve 43 is slid in the axial direction to move the movable roll 8 to a target position. Here, the amount of movement of the movable roll 8 is detected by measuring the number of rotations with a pulse oscillator incorporated in the roll shaft rotating device (the hydraulic motor 87 for width adjustment).

(5) The oil pressure is again supplied to the oil groove 28 from the oil pressure device 31 through the oil supply hole 34A to
After the gap 1 is enlarged and the frictional resistance is reduced, the oil pressure from the hydraulic device 31 is introduced into the pushing oil chamber 30 and pressurized, and the inner taper sleeve 21 is pushed toward the base end. As a result, a pressing force is applied to the outer taper sleeve 22 in the radially outward direction, and the hydraulic pressure is discharged from the oil groove 28, thereby fixing the movable roll 8 and the width changing sleeve 43 via the roll sleeve 9.

(6) Further, the roll shaft 1 is moved in the axial direction by the shaft adjusting device 5, and the center of the fixed roll 6 and the movable roll 8 is passed by a plurality of ultrasonic position detectors 49A to 49C shown in FIG. Match with line P.

(7) When the fixed roll 6 and the movable roll 8 are exchanged, the sleeve expanding and contracting means 12
After releasing the fixing of the roll sleeve 9, the coupling 3
3 is removed from the roll shaft 1, the movable bearing base 4 is moved away from the roll shaft 1, the bearing box 4a is separated from the tip of the roll shaft 1, the fixed roll 6 and the movable roll 8 are pulled out from the roll shaft 1 together with the roll sleeve 9, and a new one is obtained. The fixed roll 6 and the movable roll 8 may be mounted together with the roll sleeve 9.

In the above embodiment, the fixed roll 6
The coupling 33 is attached to and detached from the roll shaft 1 only when the movable roll 6 is replaced. In the above embodiment, the material to be straightened is H-shaped steel W. However, as shown in FIG. 6, fixed rolls 63A and 63A and movable rolls 63B and 64B having different shapes between the upper roll shaft 61 and the lower roll shaft 62 are used. The sheet pile S may be mounted to correct or roll the sheet pile S.

FIG. 6 shows another embodiment of the roll width adjusting device, in which the same members as those in the previous embodiment are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, a shaft hole 81 of the sleeve attaching / detaching means 11 is formed on the movable bearing base 4 side, and an operating shaft 82 provided in the shaft hole 81 is configured to be operable from the movable bearing base 4 side. The operating shaft fixing tool 8 provided on the replacement shaft 83 of a roll changing device (not shown) capable of simultaneously changing the fixed roll 6 with the roll sleeve 9 and the movable roll 8.
By rotating the roll shaft 1 with the operating shaft 82 fixed by 4, the operating shaft 82 is pushed and pulled in the axial direction to move the cotter pin 26 back and forth, and the roll sleeve 9 can be fixed and released.

Oil supply holes 85A to 85C connected to the return oil chamber 29, the pushing oil chamber 30, and the oil groove 28 are bored in the roll shaft 1 on the side of the fixed bearing base 2 and provided at the base end. It is opened and connected to the hydraulic device 31 via the coupling 86. Reference numeral 87 denotes a width adjusting roll shaft rotating device which is provided on a driven roll shaft (for example, the lower roll shaft 51) and rotates the roll shaft 1 from outside the coupling 86.

[0029]

As described above, according to the present invention, the roll width changing operation is performed by stopping the rotation of the roll shaft, stopping the rotation of the width changing sleeve by the sleeve locking member, and moving the roll by the sleeve expanding / contracting means. Fixing the width change sleeve,
In addition, the procedure for sliding the movable roll by the roll position adjusting means can be performed easily, and the interval between the rolls can be adjusted within the range of the effective length of the female screw portion for adjustment. The roll width can be adjusted within the range.

Further, by providing the hydraulic supply coupling on the fixed bearing base side, the movable bearing base is separated from the roll shaft, and the coupling is detached from the roll shaft at the time of a roll change for extracting the movable roll and the fixed roll to the tip end side. It is not necessary to change the roll, and the roll can be easily replaced.

[Brief description of the drawings]

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

FIG. 2 is a sectional view showing a base end side of the roll shaft.

FIG. 3 is an enlarged plan view showing a sleeve stopper of the roll width adjusting device.

FIG. 4 is a cross-sectional view of a straightening device including the roll width adjusting device.

FIG. 5 is a partial front view showing a correction state of another correction target material of the correction device.

FIG. 6 is a cross-sectional view showing another embodiment of the roll width adjusting device according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 roll shaft 2 fixed bearing stand 3 movable bearing stand 6 fixed roll 7 roll width adjusting device 8 movable roll 9 roll sleeve 11 sleeve attaching / detaching means 12 sleeve expanding / contracting means 13 roll position adjusting means 21 inner taper sleeve 22 outer taper sleeve 28 oil groove 29 Return oil chamber 30 Pushing oil chamber 41 Male screw part for adjustment 42 Female screw part for adjustment 43 Width changing sleeve 44 Locking arm 44a Locking part 45 Locking groove 46 Disengaging cylinder 47 Sleeve locking tool 48A Drive gear 48B Passive gear 48 ' Roll shaft rotating device 71 Screw part 72 Working shaft 73 Electromagnetic clutch 82 Working shaft 85A to 85C Oil supply hole P Pass line W H-shaped steel

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-155812 (JP, A) JP-A-7-80516 (JP, A) JP-A-3-264105 (JP, A) JP-A-4- 238610 (JP, A) JP-A-4-100608 (JP, A) JP-A-3-210907 (JP, A) JP-A-4-108902 (JP, U) JP-A-3-31001 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B21B 27/02 B21D 3/05

Claims (2)

(57) [Claims] 1. A roll shaft on which a fixed roll is externally fitted and fixed,
A pair of inner taper sleeve and outer taper sleeve fitted to each other via a tapered surface are externally fitted, and a roll sleeve is externally fitted to the outer taper sleeve, and an adjusting external thread portion is formed on the outer peripheral surface of the roll sleeve. A width change sleeve is externally fitted to the roll sleeve through the adjustment male screw portion via the adjustment female screw portion, and a movable roll externally slidably fitted to the width change sleeve and the roll sleeve in the axial direction. The outer taper sleeve and the roll sleeve are fixed to a roll shaft, and the inner taper sleeve is urged in the axial direction to slide. This allows the roll sleeve to expand and contract via the tapered surface, and fixes or releases the movable roll and the width changing roll sleeve to the roll shaft. A possible sleeve expanding / contracting means is provided, and in a state where the sleeve expanding / contracting means is released and the sleeve locking member stops the rotation of the width changing sleeve, the width is changed via the adjusting male screw portion and the adjusting female screw portion by rotation of the roll shaft. A roll width adjusting device comprising a roll position adjusting means for sliding a sleeve and a movable roll in an axial direction. 2. A base end of a roll shaft is rotatably supported by a fixed bearing base, and a tip end of the roll shaft is removably supported by a movable bearing base. Forming a return oil chamber and a push oil chamber for sliding the inner taper sleeve in the axial direction, and drilling an oil supply hole for supplying oil pressure to the return oil chamber and the push oil chamber in the roll shaft. The roll width adjusting device according to claim 1, wherein a coupling for supplying hydraulic pressure from a hydraulic device to the oil supply holes is provided at a base end of the roll shaft.