JPS61193706A - Roll width adjuster for width adjustment type roll - Google Patents

Abstract

PURPOSE:To improve workability with good safety by exerting an oil pressure to cylinder and piston devices to press right and left sleeve rolls thereby adjusting roll width. CONSTITUTION:The oil pressure is exerted to cylinder piston rods 22 attached to oscillating arms 21 by tuning cylinders to push simultaneously the right and left sleeve rolls 1. The rolls 1 are pushed out until the rolls contact with metallic fittings 6 for centering in the above-mentioned manner. The oil pressure is released and the rods 22 are reset to the home positions by spring mechanisms. A driving motor is run backward to swing backward the oscillating arms 21. Shims 3 having a prescribed thickness are inserted between an intermediate sleeve 2 and the rolls 1 and thereafter nuts 4 are turned to tighten the right and left rolls 1 by the fittings 6. The roll width is thus adjusted and the workability is remarkably improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Object of the Invention> Industrial Field of Application The present invention relates to a roll width adjustment device for a width adjustment type mill roll.

Conventional technology When trying to improve the dimensional accuracy of H-shaped steel, the flange thickness,
It is necessary to increase the accuracy of the wear 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 To prevent this, width-adjustable rolling rolls whose roll width can be adjusted off-line are used. To give an example, JP-A-58-148
As shown in No. 008, as shown in Figure 4,
The left and right sleeve rolls 1 are attached to the arbor roll 10 via a torque transmission mechanism such as a spline 7, and the left and right sleeve rolls 1 move along the spline 7.
The intermediate sleeve 2 is interposed between the left and right sleeve rolls 1, and the intermediate sleeve 2 at the opening is tightly fitted into the arbor roll 10, and the center part of the intermediate sleeve 2 is tightly fitted into the arbor roll 10. It coincides with the center of rolling. By inserting shims 3 of appropriate thickness between the intermediate sleeve 2 and the left and right sleeve rolls 1, a predetermined width W of the roll can be obtained. In this way, in order to insert the shim 3 between the intermediate sleeve 2 and the left and right sleeve rolls 1, it is necessary to create a space large enough to insert the shim 3 in advance. It is necessary to push out a predetermined amount of each to the outside, and this work is performed as follows.

(1) The nut 4 is screwed to the metal fitting 6, and when the nut 4 is turned, the sleeve roll 1 and the metal fitting 6 are separated by a predetermined distance.

(2) By applying a predetermined hydraulic pressure to a plurality of hydraulic holes 8 installed at equal intervals in the circumferential direction inside the intermediate sleeve 2, the built-in piston 9 is pushed out, thereby causing the shim 3 and the left and right sleeve rolls 1 to are pushed out at the same time, and the left and right sleeve rolls 1 are pushed out until they hit the metal fittings 6. Note that when the oil pressure is removed, the piston 9 returns to its original position.

When pushing out the piston using hydraulic pressure in this way, as shown in Fig. 5, hydraulic piping is connected to the opening of the hydraulic hole 8, and work such as air bleeding is performed before hydraulic pressure is applied. The work is performed from the top of the roll in consideration of workability, so the arbor roll 10 must be rotated each time, and the work efficiency is poor because wires, cranes, etc. are used, and this work alone takes about 6 hours. ,
There is also a safety issue.

That is, when setting the variable width roll off-line, remove the plugs 60 from the openings of the hydraulic holes 8 and 8' of the intermediate sleeve 2 in FIGS. 5 and 6. (Necessary to prevent scale from entering the hole).

Next, a male self-sealing coupling 61 is screwed into the hydraulic hole 8, oil is applied to the hydraulic hole 8', and a plug 60 is screwed into the opening of the hydraulic hole 8'. cylinder 8a
Two hydraulic holes 8.8' are usually installed at one end to allow air to bleed, and the male self-sealing couple 61 is lubricated to the female self-sealing couple. After the air is removed, the female self-sealing coupling 62 is removed.

Thereafter, the arbor roll 10 is rotated using a crane, wire, etc., and the above operation is performed for each hydraulic hole in the intermediate sleeve. For example, if there are eight hydraulic holes, the process is repeated eight times.

After completing the work on each hydraulic hole as described above, connect the pump to the hydraulic piping, bleed the air, and then connect the intermediate sleeve 2.
Hydraulic piping is connected to and a predetermined hydraulic pressure is applied, whereby the left and right sleeve rolls 1.1 are pushed outward.

To remove the oil pressure, remove the hydraulic pressure, remove the hydraulic piping, remove the male self-sealing coupling 61, and then attach the plug 60 to the opening of each hydraulic hole in the intermediate sleeve 2.

When resetting through the above, some of the work requires the use of cranes, wires, etc., and each work takes 0.1 to 0.3 hours, and all works take about 6 hours or more. It is also taking place.

Problems to be Solved by the Invention The present invention aims to solve the above-mentioned drawbacks, and specifically aims to improve the fact that the conventional example takes time to work and has safety problems. .

<Structure of the Invention> Means for solving the problem, that is, the present invention provides that left and right sleeve rolls are engaged with an arbor roll in a movable state in the longitudinal direction of the arbor roll axis, and that these left and right sleeve rolls are In a width adjusting device for a width-adjustable roll, in which an intermediate sleeve is interposed between the intermediate sleeves and the intermediate sleeve is tightly fitted to the arbor roll, the arbor roll is moved to a predetermined position by pushing the sides of the left and right sleeve rolls. a centering device for positioning, a plurality of swinging arms that swing so as to pass through the outer periphery of the intermediate sleeve, and a plurality of swinging arms that are provided for each of these swinging arms symmetrically with respect to a center line of the centering device. It is characterized by comprising a cylinder/piston device, and configured to push the left and right sleeve rolls and adjust the roll width by simultaneously applying hydraulic pressure to each cylinder/piston device.

Therefore, a more detailed explanation will be given below, focusing on the configuration of this means.

In addition, FIG. 1 is a front view showing a part of the adjustment device according to one embodiment of the present invention in cross section, and FIG.
It is a sectional view taken along the line A, and is a sectional view taken along the line CC of FIG. 3 and FIG. 2.

First, in FIG. 1, reference numeral 10 indicates an arbor roll, and this arbor roll 10 is supported by bearings 15 at appropriate locations at both ends thereof in an offline state. In addition, the width-adjustable rolling roll is configured in the same manner as the conventional example, for example,
Similarly to the one shown in FIG. 4, the left and right sleeve rolls 1 move along the spline 7, turn the nut 4 to separate the fitting 6 and the sleeve roll 1, and the sleeve roll 1 on the left and right and the intermediate A shim 3 is inserted between the sleeve 2 and the roll width is adjusted.

Further, a drive motor 33 is provided on the off-line foundation 40, and a rotating shaft 32 is connected to this motor 33.

As shown in FIG. 1, the rotating shaft 32 has a reference line L that coincides with the center line of the intermediate sleeve 2 in the roll centering state.
- Right screw 32a and left screw 32 correspond to L.
b, and each of the screws 32a and 32b has a reference line L.
A centering fitting 30 is provided at a position symmetrical to -L. A soft material 31 such as rubber is provided on the inner surface of each centering fitting 30 so as not to damage the left and right sleeve rolls 1.
Place each centering fitting 30 on the left and right sleeve rolls 1.
By moving the soft material 31 to the side, each sleeve
The roll 1 is pushed and centered so that the center position of the arbor roll 10, that is, the center position of the intermediate sleeve 2, coincides with one predetermined reference position.

Further, as shown in FIGS. 2 and 3, four support stands 24 are provided on the foundation 40, and holes 24a, 24b, 24c, and 24d are formed in each support stand 24, respectively.

Each hole 24a, 24b, 24c, 24d has a bottle 23a,
23b, 23c, and 23d are aligned, and one end of each swing arm 21a, 21b, 21c, and 21d is attached via these pins.

Each of these bins 23a, 23b, 23c, 23d is connected to a drive motor 50, and when the drive motor 50 is rotated,
Each swinging arm 21a, 21b, 21c, 21d rotates around each bin 23a, 23b, 23c, 23d.

In addition, each swing arm 21a, 21b, 21c, 21
The rotation angle, operating range, etc. of d are adjusted by separately installing a celsin or limit switch (not shown), and the center position of each swing arm 21a, 21b, 21c, 21d is adjusted as shown in FIG. Match the line LL.

Each of these swing arms 21a, 21b, 21c, and 21d is configured so that, as shown in FIG. , each swing arm 21a, 21b, 21c, 21d is provided with a cylinder/piston device 22 at a predetermined position in the circumferential direction thereof, and these cylinder/piston devices 22 are installed so as to be symmetrical with the arm center line N-N.

In order to accommodate these cylinder/piston devices 22, especially on the inner circumferential portions of the swing arms 21a and 21b, there are projecting portions 2 extending outward as shown in FIG.
1e, and a recess 2a is provided on the outer periphery of the intermediate sleeve 2 in correspondence with the shape of each of these overhangs 21e, so that each overhang 21e fits into the recess 2a.

In addition, the tip of the swinging arm 210.21d is also connected to the overhanging portion 2.
It is configured to have the same shape as 1e, and the tip end fits into the outer circumferential recess 2a of the intermediate sleeve 2.

As shown in FIG. 2, the swing arms 21a and 21b and the swing arms 21c and 21d are arranged symmetrically with respect to the center line N-N of the arbor roll 10. ing.

In addition, FIG. 2 shows each swing arm 21a, 21b, 21c,
21d and the outer peripheral recess 2 of the intermediate sleeve 2.
A is shown in a state where they are fitted together, and each swing arm 2
A total of eight cylinder/piston devices 1a, 21b, 21c, and 21d are provided, but this number can be set arbitrarily. However, the central angle α between adjacent cylinder-piston devices 2 is constant, and this central angle α is the same as the angle between adjacent splines 7 of the arbor roll 10, and as shown in FIG. When one center coincides with the center line N--N, all the recesses 2a of the intermediate sleeve are in mutually symmetrical positions with respect to the center line N--N. Swing arms 21a, 21b, 21c, 21
Although not particularly shown, synchronized cylinders simultaneously apply a predetermined amount of hydraulic pressure to all the cylinder/piston devices 22 provided in d to push out all the piston rods at once, thereby pushing the left and right sleeve/rolls 1. Can be expanded. Further, since the cylinder/piston device 22 is securely vented in advance and has hydraulic piping, etc., there is no need to repeat the above-mentioned work every time the width adjustment work is performed.

Operation Next, the operation will be explained through the procedure of changing the roll width using the roll width adjusting device according to the above configuration.

First, the width-adjustable rolling roll is transported off-line, and both ends of the arm-roll 100 are placed on the bearings 15. At the time of opening, the centering device 30 is set in advance at a position where it does not interfere with the sleeve roll 1.

Therefore, the drive motor 33 is rotated to operate the centering fittings 30 on both sides of the sleeve roll 10.
When the rolling center position of the arbor roll 10 does not match the reference line LL, the arbor roll 10 is pushed in the axial direction with one of the centering metal fittings 30. The arbor roll 10 until it hits the soft material 31 of the other centering metal fitting 30.
move.

The centering operation is completed when the left and right sides of the sleeve roll 1 hit the soft material 31, and at this time the center position of the intermediate sleeve 2 coincides with the reference line L-.

Next, the motor 33 is reversed, and the centering metal fitting 30
and the left and right sleeve rolls 1 are separated by a predetermined amount.

Next, the nut 4 is rotated using a suitable jig to separate the left and right sleeve rolls 1 and the centering fitting 6 by a predetermined distance.

Next, one of the splines 7 of the arbor roll 10
The rotation of the arbor roll 10 is adjusted so that it matches N-N shown in the figure. In this case, for example, the wobbler part 10a
When the spline becomes vertical as shown in Figure 1, the spline 7
The roll shape may be determined so that one of the two lines coincides with N--N in FIG. 2, and the wobbler portion 10a may be adjusted to be vertical.

Next, the swinging arms 21a, 21b are driven by the drive motor 50.
, 21c, and 21d are swung to a predetermined position on the intermediate sleeve 2, and the overhanging portion 21e and the recessed portion 2a are fitted into each other.

Next, the swing arm 21 is rotated by a tuning cylinder (not shown).
Hydraulic pressure is applied to the cylinder piston rods 22 attached to the cylinders a, 21b, 21c, and 21d to push the left and right sleeve rolls 1 at the same time, and in this way the sleeve roll 1 is pushed out until it hits the centering fitting 6.

The hydraulic pressure is removed and the piston rod 22 is connected to a spring mechanism (not shown).
The swing arms 21a, 21b, 21c, and 21d are caused to swing in the opposite direction by rotating the drive motor 50 in the opposite direction.

Next, a shim 3 of a predetermined thickness is inserted between the intermediate sleeve 2 and the sleeve roll 1, and in the meantime, the nut 4 is turned and the left and right sleeve rolls 1 are tightened with the centering fittings 6.

The roll width can be adjusted through the series of operations described above, and the workability of conventional roll width adjustment operations is greatly improved.

<Effects of the Invention> As explained in detail above, the present invention has a cylinder/piston device attached to a plurality of swinging arms that engage with the outer periphery of an intermediate sleeve, and hydraulic pressure is applied to these cylinder/piston devices simultaneously to move the left and right sleeves.・It is made by pressing the roll to adjust the roll width. Therefore, when adjusting the roll width,
There is no need to set the arbor roll or install the hydraulic system each time, and the work efficiency is high.
There are no safety issues.

[Brief explanation of drawings]

FIG. 1 is a front view of a roll width adjusting device for a width-adjustable roll according to one embodiment of the present invention, and FIG. 2 is A-AI in FIG. 1.
3 is a sectional view taken along line C-C in FIG. 2, FIG. 4 is a front view of the conventional roll width adjusting device, and FIG. 5 is a sectional view of the intermediate sleeve portion in the present invention. FIG. 6 is a cross-sectional view of FIG. 5 taken from the direction of -. Code 1... Sleeve roll 2... Intermediate sleeve 3... Shim 4.
...Nut 5 ... Half ring 7 ... Spline 10 ... Arbor roll 15 ... Bearing 21a, 21b, 21c, 21d ... ... Swinging arm 22 ... Cylinder/piston 30 ... Centering fitting 31 ... Soft material

Claims (1)

[Claims] The left and right sleeve rolls are movably engaged with the arbor roll in the longitudinal direction of the arbor roll axis, and
In a width adjustment type roll width adjustment device in which an intermediate sleeve is interposed between these left and right sleeve rolls, and this intermediate sleeve is tightly fitted to the arbor roll, the side surfaces of the left and right sleeve rolls are pushed to a centering device that positions the roll in a predetermined position;
A plurality of swinging arms that swing so as to advance toward the outer periphery of the intermediate sleeve, and a cylinder/piston device that is provided for each of these swinging arms symmetrically with respect to the center line of the centering device. By simultaneously applying hydraulic pressure to each cylinder/piston device, the left and right sleeves and
A roll width adjustment device for a width-adjustable roll, characterized in that it is configured to adjust the roll width by pushing the roll.