JP2737328B2 - Side guide device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a side guide device installed in front of a mill or downcoiler of a hot rolling line and for guiding a strip, and is parallel to a center of a pass line. It is also possible to move not only to tilt but also to tilt.

[Prior art] Before the mill or downcoiler of the hot rolling line,
It is common to install a side guide device for guiding a strip (strip).

For example, a side guide device installed before the down coiler of the hot rolling line includes guides installed on both sides of a hot run table provided on the exit side of the finishing mill, and is provided at a predetermined position by this side guide device. The guided strip is sent to a downcoiler via a pinch roll, pressed by a wrapper roll, and wound around a horizontal mandrel at the center of the strip.

An example of such a side guide device is disclosed in JP-B-63-45.
As shown in FIG. 5, a pair of guides 1 are disposed on both sides of a pass line L, and each of the guides 1 has two movable cylinders 2 for controlling the degree of opening. It is configured so that the setting and the interval can be adjusted, and the entry detector 3 of the strip S provided on the entry side of these guides 1
The operation device 5 controls the operation timing of the interval adjusting mechanism of the side guide device 6 based on the detection signal of the speed detector 4 of the approaching strip.

In such a side guide device 6, the guide 1 is guided while being driven in parallel to the center of the pass line of the strip S, and the guide 1 and the movable cylinder 2 are connected by a pin joint. .

[Problems to be Solved by the Invention] In such a side guide device 6, when the strip S bends during winding, the guide 1 is parallel to the center of the pass line. Is locally in contact with one of the guides 1 and there is a problem that an ear flaw is formed on the strip S or an ear fray is generated.
The guide 1 has a problem that local wear occurs.

Further, when the two movable cylinders 2 of the guide 1 are out of synchronization, there is a problem that the guide 1 is inclined and a large force is applied to the rod of the movable cylinder 2.

Therefore, there is a side guide device in which a gap is formed in the pin joint portion so that the guide 1 can be inclined with respect to the center of the pass line. However, the play of the pin joint portion reduces the accuracy of the guide and increases the strength. There is a problem that it becomes impossible to withstand the control of oscillation or the like accompanied by excessive acceleration / deceleration, or the wear increases due to the impact force applied to the guide 1 and the backlash further increases.

The present invention has been made in view of the problems of the related art, and can drive the guide not only in parallel to the center of the pass line but also in an inclined manner. No attempt is made to provide a side guide device.

Means for Solving the Problems In order to solve the problems of the prior art, the side guide device of the present invention is a side guide device capable of setting the opening degree of the entire device in accordance with the width of the band plate. The two ends of a pair of guides on the apparatus provided on both sides in the width direction of the strip are independently installed so as to be able to move forward and backward with respect to the center of the pass line, and at least one end of the one guide facing each other There is no gap in the direction perpendicular to the center of the pass line between the fluid pressure cylinder for forward and backward driving connected to the guide and the guide, and a plane that is rotatable around an axis perpendicular to the band plate surface and parallel to the band plate surface. In the direction perpendicular to the center of the pass line, between the guide and a hydraulic cylinder for forward / reverse drive connected to at least the other end of the one guide while interposing a connecting mechanism that allows the guide to slide. Gap Soon
It is characterized in that a connecting mechanism that enables rotation about an axis perpendicular to the strip surface is interposed.

[Operation] According to this side guide device, a pair of guides provided on both sides in the width direction of the band plate, and both ends of these guides are independently moved to be parallel or inclined with respect to the center of the pass line. When it is connected to a hydraulic cylinder that drives each end, it is possible to eliminate gaps by cotters, springs, hydraulic cylinders, etc. in the direction perpendicular to the pass line, and at least one end can rotate and slide. On the other hand, at the other end, a connecting mechanism that enables at least rotation is used, so that the guide can be performed in a posture corresponding to the state of the strip while improving the accuracy of the guide.

Therefore, when the guide is used inclining positively, when the guide expands and contracts due to thermal expansion, etc., and when the synchronization of a plurality of drive fluid pressure cylinders is shifted, control with strong acceleration and deceleration can be performed. And abrasion can be reduced.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 3 relate to an embodiment of the side guide device of the present invention. FIG. 1 is a schematic plan view of the entire device, and FIG. 2 is a horizontal sectional view and a vertical sectional view of a side guide side connecting mechanism. FIG. 3 is a horizontal sectional view of the connecting mechanism on the side guide entrance side.

The side guide device 10 is provided on both sides of the pass line L with one side.
A pair of guides 11 is arranged, and a pair of entrance guides 12 expanding in a tapered shape is arranged on the entrance side of the pass line L, and is connected to an end of the guide 11 on the entrance side by a pin. Of the guide 11 and the entrance guide 12, the entrance guide 12 is rotatably fixed with a vertical pin or the like on the entry side, while the guide 11 is moved parallel to and away from the pass line L, It can be made to approach and move away while being inclined with respect to L. In order to drive the guide 11 and the entrance guide 12, two hydraulic cylinders 13 each provided with a stroke position detector on each guide 11 are connected via connection mechanisms 14, 15. The ends of the rods 13a of these four hydraulic cylinders 13 are moved to arbitrary positions by hydraulic pressure supplied via a servo valve (not shown).

In addition, the entire side guide is provided with a pull-back cylinder that can set the opening degree according to the plate width by a motor, a speed reducer, a screw, and the like, and further eliminates mechanical clearance (play).

Although not shown in the drawing, the plate width end detectors are installed on the entrance side and the exit side of the side guide device 10, respectively, detection signals are input to the control device, and control signals based on these detection signals are transmitted to each hydraulic cylinder. 13 is output.

Of the connecting mechanisms 14, 15 for connecting the guide 11 of the side guide device 10 and the hydraulic cylinder 13, the connecting mechanism 14 is configured to be able to rotate and slide in the material flow direction so that the guide 11 can be parallel or inclined. The coupling mechanism 15 is configured to be rotatable only.

As shown in FIG. 2, the connecting mechanism 14 includes a box-shaped support member 16 attached to the back of the guide 11, and a vertical connecting pin 17 is mounted in the support member 16, and the path line L It is clamped by two bushes 18 inserted in the front and rear directions at right angles. This bush 18 extends in the width direction (pass line L
(Direction) Sliding gaps d are formed on both sides of the support member 16 so that the connection pin 17 can rotate and slide within the support member 16.

Further, a spring 19 is provided between the back surface of the bush 18 on the outer side in the direction perpendicular to the pass line L and the inner surface of the support member 16 to eliminate a gap.
, And the biasing force always makes the gap in the direction perpendicular to the pass line L zero regardless of the position of the connecting pin 17.

Instead of using the spring 19 to eliminate the gap, a fluid pressure cylinder such as a hydraulic cylinder or an air cylinder may be provided, or a cotter or the like may be provided.

A connecting rod 20 is inserted into the rotatable and slidable connecting pin 17 and connected by tightening with a nut, and a rod 13a of the hydraulic cylinder 13 is connected to the other end of the connecting rod 20 with a pin. Are linked.

Accordingly, when hydraulic oil is supplied to the hydraulic cylinder 13 to move the guide 11, the connecting rod 20 is supplied via the rod 13a.
The driving force is transmitted to the
Driving force is transmitted to the end of the guide 11 on the exit side of the pass line L via the guide 16, and the guide 11 is moved in parallel to the pass line L, and the guide 11 is moved between the bush 18 and the support member 12. The guide 11 can be inclined according to the gap d.

In this case, since a gap is eliminated in the direction perpendicular to the pass line L by the spring 19, the amount of expansion and contraction of the rod 13a of the hydraulic cylinder 13 becomes the amount of movement of the guide 11 as it is, and the guide 11 can be positioned with high accuracy.

On the other hand, as shown in FIG.
The configuration is almost the same as that of 14, and the same members are denoted by the same reference numerals and description thereof will be omitted.

This connecting mechanism 15 allows only rotation about a vertical axis, and therefore differs from the connecting mechanism 14 only in that both sides of the bush 18 in the width direction (pass line L direction) and the supporting member 16 No gap d is formed between them, so that the connecting pin 17 can only rotate within the support member 13.

Therefore, when the rod 13a of the hydraulic cylinder 13 is expanded and contracted, the driving force is transmitted to the connecting pin 17 via the connecting rod 20, and further driven to the end of the guide 11 on the path line L entering side via the bush 18 and the supporting member 16. Since the force is transmitted, the guide 11 can be moved in parallel to the pass line L (line center), and when the guide 11 is inclined with respect to the line direction, the connecting pin 17 becomes a fulcrum of the inclination. .

According to such a side guide device 10, the connecting mechanisms 14, 1 are provided between the hydraulic cylinder 13 for driving the guide 11 and the guide 11.
5 is interposed, so one guide 11 has 2
When there is a difference in the synchronization of the hydraulic cylinders 13 provided, when the guide 11 is actively inclined to guide the strip S, or when the guide 11 itself expands or contracts due to thermal expansion or thermal contraction. For example, the guide 11 can be moved smoothly without excessive force being applied to the hydraulic cylinder 13 and its rod 13a.

In addition, since the backlash in the opening and closing direction of the guide 11 is eliminated by the coupling mechanisms 14 and 15, the guide 11 can be controlled with strong acceleration and deceleration. Wear can be reduced.

Further, the guide 11 is positively tilted to guide the strip S, so that the guide 11 is tilted in the opposite direction to the camber at the front and rear ends of the strip S, while the middle of the strip S is tilted. By inclining the guide 11 in parallel to the inclination of the part,
It is possible to prevent a telescope from being generated in the coil at any of the leading end, the middle part, and the trailing end of the strip S.

Next, another embodiment of the coupling mechanisms 14, 15 will be described with reference to FIG.

In these connecting mechanisms 14, 15, the connecting pin 17 is rotatably supported above and below the supporting member 16 via the fixed bush 21, while the distal end of the connecting rod 20 has a divided structure. A spring 19 is interposed between the front surface of the bush 18 at the tip and the inner surface of the support member 16 so as to be fixed to the connecting pin 17 by interposing the pin 18 and to eliminate a gap in the direction perpendicular to the pass line L. .

In the case of the connecting mechanism 14, gaps d are formed on both sides of the connecting portion between the bush 18 and the connecting rod 20 in the direction of the pass line L. In the case of the connecting mechanism 15,
This gap d is not formed.

The shape of the connecting pin 17 may be tapered at the distal end or tapered at both ends.

By using such connecting mechanisms 14, 15, the same effects as those of the side guide device 10 already described can be obtained.

In the above embodiment, the side guide installed before the down-coiler has been described. However, the present invention is not limited to this and can be similarly applied to the side guide installed before the mill.

[Effects of the Invention] As described above in detail with one embodiment, according to the side guide device of the present invention, a pair of guides provided on both sides in the width direction of the strip, and both end portions of these guides, respectively. Independently moved so that it can be moved parallel or inclined with respect to the center of the pass line, and when connected to a hydraulic cylinder that drives each end, cotters, springs, hydraulic cylinders perpendicular to the pass line While eliminating the gap by such as, at least one end is a connecting mechanism that allows rotation and sliding, while the other end uses a connecting mechanism that allows at least rotation, so while improving the accuracy of the guide Guide can be performed in a posture corresponding to the state of the band plate.

Therefore, when the guide is used inclining positively, when the guide expands and contracts due to thermal expansion, etc., and when the synchronization of a plurality of drive fluid pressure cylinders is shifted, control with strong acceleration and deceleration can be performed. And abrasion can be reduced.

[Brief description of the drawings]

1 to 3 relate to an embodiment of the side guide device of the present invention. FIG. 1 is a schematic plan view of the entire device, and FIG. 2 is a horizontal sectional view and a vertical sectional view of a side guide side connecting mechanism. FIG. 3 is a horizontal sectional view of the connecting mechanism on the side guide entrance side. FIG. 4 is a horizontal sectional view and a vertical sectional view according to another embodiment of the connecting mechanism used in the side guide device of the present invention. FIG. 5 is a schematic plan view of a conventional side guide device. 10: side guide device, 11: guide, 12: entrance guide, 13:
Hydraulic cylinder (fluid pressure cylinder), 13a: rod, 14: coupling mechanism (rotation and slide) 15: coupling mechanism (rotation), 16:
Support member, 17: connecting pin, 18: bush, 19: spring, 20: fixed bush, 21: slide, L: pass line, S: strip (strip), d: gap.

Claims (1)

(57) [Claims] 1. A side guide device capable of setting the degree of opening of the entire device in accordance with the width of a band plate, wherein both end portions of a pair of guides on the device provided on both sides in the width direction of the band plate. Are independently installed so as to be able to move forward and backward with respect to the center of the pass line, and a right angle of the center of the pass line is formed between the guide and the hydraulic cylinder for forward and backward driving connected to at least one end of the one guide. While there is no gap in the direction, while interposing a coupling mechanism that is rotatable about an axis perpendicular to the band plate surface and slidable on a plane parallel to the band plate surface,
There is no gap in the direction perpendicular to the center of the pass line between the fluid pressure cylinder for forward / reverse drive connected to at least the other end of the one guide and the guide, and around the axis perpendicular to the strip plate surface. A side guide device comprising a rotatable connection mechanism.