JPS61169105A - Roll width adjusting device - Google Patents

Abstract

PURPOSE:To improve the operability at the time of adjusting the width of a roll and to improve the dimensional accuracy of a product, by disposing as pair of sleeve rolls on an arbor roll by making the distance between the sleeve rolls automatically adjustable. CONSTITUTION:An arbor roll 10 is supported freely rotatably by a pair of bearings 15, and sleeve rolls 1 are arranged on it symmetrically with respect to a rolling center position. A spline 7 is fitted onto the arbor roll 10, and the sleeve rolls 1 are screwed in a state of movable on the spline 7. A fixture 6 is screwed onto the arbor roll 10 by a nut 4. A part of the nut 4 is brought into contact with the outside face of roll 1, and the roll 1 is pushed forward by moving the nut 4. When the arbor roll 10 is rotated by fitting the front end of a piston rod 31 to the hole of nut 4, the nut 4 is not rotated, and the roll 10 is fastened to its axial direction to push the roll 1 to the axial direction, thereby adjusting the distance between the rolls 1.

Description

[Detailed Description of the Invention] <Object of the Invention> Industrial Field of Use The present invention relates to a roll width adjustment device for a width adjustment type rolling roll, and more specifically, the present invention relates to a roll width adjustment device for a width adjustment type rolling roll, and more specifically, the invention relates to a roll width adjustment device for a width adjustment type rolling roll. The present invention relates to an adjusting device that can automatically and safely adjust the roll width.

Conventional technology ■ When trying to improve the dimensional accuracy of shaped steel, the flange thickness,
It is necessary to improve the accuracy of the web height, but in this case, the horizontal roll width of the finishing rolling mill can only be used at a certain standard width within the allowable range of the product dimensions of the section steel, and the roll consumption rate is In order to prevent this, width-adjustable rolling mills are used that can adjust the roll width off-line.

For example, FIG. 5 is a front view of an example of a conventional width-adjustable rolling roll.
is attached to this spline 7, and a torque transmission mechanism (
(not shown) are connected. Therefore, the left and right sleeve rolls 1 are rotated along the axis of the alvar roll 10 by the rotation of the spline 7 that rotates together with the alvar roll 10.
), the horizontal roll W can be adjusted by moving toward or away from each other. Adjustment of the pair of movable sleeve rolls 1 is performed by an intermediate sleeve 2, a shim 3, and a hydraulic piston 9. The intermediate sleeve 2 is tightly fitted on the alvar roll 10, and the center of the intermediate sleeve 2 is located at the rolling center. is consistent with Further, the shim 3 is inserted between the intermediate sleeve 2 and the left and right sleeve rolls 1 and has an appropriate thickness, and a predetermined horizontal roll width W is obtained by inserting this shim 3, which is usually 1.1 mm. , It is constructed in the form of segments, which are divided into several parts in consideration of the setting work. In addition, the pair of sleeve rolls 1 are fixed by a ring-shaped nut l-4 and a fixing metal nut 6, and in particular, the nut 4 is rotated manually, resulting in extremely poor work efficiency (note that the reference numeral 5 is It's a halfling.)

7I, that is, the width adjustment type rolling roll of the conventional example
If the horizontal roll width W is to be increased in a state not shown in the figure to make it ready for rolling again, off-line, first turn the lug l-4 by hand and turn it around the jig for a predetermined time. In this case, since the threads on the inner circumferential surface of the nut 4 are screwed together with the threads on the outer circumference of the fixing metal fitting 6, each fixed metal 6 is attached to each sleeve roll 1.
Separate from each other by a specified distance. Further, a plurality of hydraulic holes 8 are provided on the inside of the intermediate sleeve 2, and are divided into a plurality of equal parts.
is pushed out, and the shim 3 and sleeve roll 1 are pushed out simultaneously until they hit the metal fitting 6 (note that when this oil pressure is removed, the piston 9 returns to its original position).

Moreover, when further spacing is required between the intermediate sleeve 2 and the shim 3, a shim (not shown) of a different thickness is inserted.

Next, by turning the nut 4 in this state, the tip of each fixing metal fitting 6 comes into contact with the side surface of each sleeve roll 1, and by further turning the nut 4 by a predetermined amount, the metal fitting 6 is tightened with the tightening force. The sleeve roll 1 is tightened ('l' i-1 is fixed, and the horizontal roll width is W+2t (W is the original horizontal roll width, and t is the thickness of the shim 3).

However, when the adjustment work was performed as described above, the following problems occurred.

(1) The nut 4 is usually operated using a hand jig, which is inefficient and poor in workability and safety.

(2) When applying a predetermined hydraulic pressure to the piston 9, it is necessary to connect hydraulic piping to the hydraulic hole 8, remove air, etc., and since these operations are usually performed from the top, the arbor roll must be used each time. (3) Since shim 3 is normally loaded from the top, the roll must be reversed each time. However, since the work is done using wires, cranes, etc., the workability is poor and safety is also a problem.

(4) Tightening the sleeve roll
- Since the nut 4 is turned manually, the nut 4 tends to be insufficiently tightened, which may have negative effects such as large variations in product accuracy (flange thickness, etc.) due to roll play during rolling.

Problems to be Solved by the Invention The present invention aims to solve the above-mentioned drawbacks. Specifically, the current width-adjustable rolling roll requires a large amount of time, for example, about 20 hours, to adjust the roll width and tighten the roll. The purpose of the present invention is to improve the problems such as the necessity of tightening the sleeve roll, which relies on human power to fix, and the tightening force required.

In short, according to the roll width adjusting device according to the present invention, it is possible to improve workability, reduce labor costs by increasing efficiency, and stabilize product accuracy by perfecting roll tightening.

<Structure of the invention> Means to solve problems Next, the present invention will be explained in detail with reference to the drawings.

Note that FIG. 1 is a front view of a width adjustment device according to one embodiment of the present invention, and FIGS.
FIG. 1A is a cross-sectional view taken along line 1A'-1, line 1t-B, and line GG-1 in the figure.

First, in FIG. 1, a roll 11 (not shown by reference numeral 10) is rotatably supported off-line by a pair of bearings 15.
A pair of sleepronils 1 are arranged symmetrically with m. That is, a spline 7 is fitted onto the arbor roll 10, and a pair of sleeve rolls 1 are movably screwed into the spline 7. Therefore, as the arbor roll 10 rotates, the pair of sleeve rolls 1 are brought closer together or opened, and the roll width can be adjusted.

Near the wobbler part 10A at one end of the mouth arbor roll 10, as shown in FIG. This gear 26 is connected to the drive motor 23.
The end of the shaft 24 is fitted with a gear A725. Therefore, if the drive motor 23 is not driven, the rotating plate 2
The arbor roll 1 is rotated 0 and fitted with the rotary plate 20.
0 can be rotated. The rotating plate 20 is supported by a support frame 22 via a bearing 21, and the support frame 22 and the drive motor 23 are mounted on a single pedestal 27, and this pedestal 27 is connected to a hydraulic cylinder piston attached to a foundation 40. It is connected to a device 28, and this device 28
By moving the piston in and out, the frame 27 is moved to the first position.
The arbor roll 10 is movable in the axial direction (not shown), so that the rotating disk 20 and the arbor roll 10 can be attached and detached. As shown in FIG. 4, the rotating disk 20 is provided with a vortex 20A so as to be able to fit into the wobbler portion 10A of the arbor roll.

Although not particularly illustrated, a guide device may be provided between the pedestal 27 and the foundation 40 in consideration of slidability and guideability. The rotation speed of the drive motor 23 can be finely adjusted, and the reduction ratio by the gears 25 and 26 can be set to an appropriate value as necessary.

On the other hand, the nuts 1 to 4 are screwed onto the arbor roll 10 via the fixing metal fitting 6, and a part of the nuts 4 comes into contact with the outer surface of each sleeve roll 1, and furthermore, as described later, Each sleeve roll 1 is extruded as shown in FIG. For this purpose, a plurality of holes 4A are provided at equal intervals on the side surface of the nut 4 as shown in FIG. The tip of the hole 4A can be inserted into the hole 4A. Note that the pillar 30 is configured to be movable in the axial direction of the arbor roll 10 by a cylinder piston device 32 installed on the foundation 40, and although not particularly shown, the pillar 30 and the foundation 40 are movable in the axial direction of the arbor roll 10.
A guide device can be installed between the PI and the PI in consideration of slidability and guiding performance. A piston mechanism is fitted into the piston rod 31 installed in the support column 30 by supplying hydraulic pressure through the hydraulic hole 30B. Therefore, even when the arbor roll 10 is rotated as described above, the nut 4 does not rotate, and especially if the nut is +-4, the threaded portion between the fixing fittings 6 is symmetrically tightened on the left and right, so the arbor roll Tightening in the same direction is possible for 10 rotations. Further, in this case, the column 3o is attached to the sleeve [1] by the cylinder screw 1-hen device 32.
- When approaching the sleeve roll 1, the support 30
When the support column 3o comes to a predetermined position so as not to come into direct contact with the cylinder piston device 3, a sensor (not shown) is activated.
Lock the hydraulic pressure of 2, and this Ii! The branch office 3o is fixed at a predetermined position.

In addition, although the above-mentioned piston mechanisms have been described as operating examples using hydraulic pressure, all other operating examples such as hydraulic pressure and pneumatic pressure are also included.

Effects The effects of the roll width adjusting device according to the present invention having the above-mentioned configuration will be explained as follows through the roll width changing mode.

First, when adjusting the roll width, first, both ends of the arbor roll 10 are placed on the bearings 15 off-line. At this time, the rotating plate 20, the arbor roll 10, the support column 30, and the sleeve roll 1 are in positions where they do not interfere with each other.

Next, the hydraulic piston 28 is actuated to insert the rotary plate 20 into the wagula part 10A at the end of the arbor roll 10.

Positioning at the time of insertion is performed by finely adjusting the rotation of the drive motor 23. Thereafter, the hydraulic cylinder piston device 32 is operated, and when the support column 30 approaches the sleeve roll 1 by a predetermined amount, the hydraulic pressure of the hydraulic device 32 is locked by the action of the sensor, and the support column 30 is fixed.

Next, the cylinder rod 31 housed in at least one of the pillars 30 is hydraulically pressed against the side surface of the nut 4 at a predetermined pressure. Furthermore, the arbor roll 10 is driven by the drive motor 2.
3 to rotate at a slow speed. When the rod 31 and the nut hole 4A match, the rod 31 is pushed into the neck 1 and 4. Thereafter, the drive motor 23 is rotated by a predetermined amount in a predetermined direction to loosen the nut 4 (the nut 4 is separated from the sleeve roll 1 by a predetermined amount). Next, the hydraulic piping is connected to all the hydraulic holes 8 of the intermediate sleeve 2. , apply a predetermined hydraulic pressure to the piston 9, and push out the shim 3 and sleeve roll 1 until the sleeve roll 1 hits the nut 4. In this state, a shim 3 of a predetermined thickness is inserted between the intermediate sleeve 2 and the sleeve roll 1, and subjected to curing. The shim 3 is divided on the circumference. For example, if it is divided into two parts, after setting the upper half of the shim 3, the arbor roll 10 is rotated half a rotation by driving the motor 23, and the other half of the shim 3 is rotated by driving the motor 23. Hit Sim 3.

Next, apply hydraulic pressure to the cylinder piston installation @311,
The arbor roll 1 is rotated by the drive motor 23 until the tip of the piston rod 31 enters the hole 4A of the nut 4. When the tip of the piston rod 31 fits into the hole of the neck l-4, the drive motor 23 rotates the arbor roll 1 in a predetermined direction by a predetermined amount, and the nut 4 tightens the sleeve roll 1.

Although the model of the drive motor 23 is not specified, if a hydraulic motor or the like is used, the tightening torque can be controlled by hydraulic control.
There are advantages that can be achieved.

By performing the series of operations as described above, the problems encountered in conventional roll width adjustment operations (poor workability during roll setting, variation in product accuracy after rolling due to incomplete roll tightening) can be resolved.

<Effects of the Invention> As described in detail above, the present invention provides a pair of sleeve rolls on a rotatably supported arbor roll that moves toward or away from each other as the arbor roll rotates, and In a width adjustment type rolling roll width adjustment device that adjusts the roll width between a pair of sleeve rolls by inserting a shim between the rolls, a pair of fixing devices provided on the arm-roll to be located outside each sleeve roll. A pair of nuts that are screwed onto these fixing fittings and that abut the outside of each sleeve roll and push out each sleeve roll, and a pair of hydraulic pressure that engages and presses a part of these nuts to fix them. It is comprised of screws and screws. Therefore, according to this roll width adjustment device, the width adjustment between a pair of sleeve rolls can be automated, and safety is improved, and especially (
Since each sleeve roll is tightened by pressing the nut with a hydraulic piston, there is no problem with rolling.

[Brief explanation of drawings]

FIG. 1 is a front view of a width adjusting device according to one embodiment of the present invention, and FIGS. 2, 3, and 4 are shown in the direction of arrow A in FIG.
5 is a front view of an example of a conventional width-adjustable rolling roll. Code 1...Sleeve roll 2...Intermediate sleeve 3...Shim 4...Nara!・ 5...Half ring 6...Fixing bracket 7...Spline 10...Arbor roll 15...
Bearing 20... Rotating plate 23... Drive motor 25...
Gear 26...Gear 28...Hydraulic cylinder piston 30...
・Strut Old... Piston 32...
・Hydraulic cylinder piston 40 ・・Basic

Claims (1)

[Claims] A pair of sleeve rolls that move toward or away from each other as the arbor roll rotates are provided on the rotatably supported arbor roll, and a shim is inserted between these sleeve rolls to separate the rolls between the pair of sleeve rolls. In a width adjusting device for a width-adjustable rolling roll, a pair of fixing fittings provided on the arbor roll are provided on the outside of each sleeve roll, and a pair of fixing fittings are screwed onto the fixing fittings and each sleeve is attached to the outside of each sleeve roll. A roll width characterized by comprising a pair of nuts that abut against the outer surface of the roll and push out each sleeve roll, and a pair of hydraulic pistons that respectively engage and press a part of these nuts to fix them. Adjustment device.