JPH10305307A - Exit guide device for rolling mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exit guide device for rolling mill in which a contact condition of guide members with rolls can be maintained, even in the case of abrasion at a tip of the guide member, and the position arrangement is very simple and a trouble such as miss-rolling and/or broken of the guide member is hardly occurred. SOLUTION: The exit guide device is set at the exit side of the rolling mill P and is equipped with a pair of the guide members 2 and energising means 15 for the guide members 2. The guide members 2 are arranged, at the both sides of carrying path PL of rolled material W, so that the tips thereof contact with the inner face of flutes 52 of each corresponding roll 50 and also those go along with the carrying path PL to be able to mutually approach and separate in the direction opposite to the rolls 50, and guide the rolled material W led through from the rolls 50 by receiving it at the inner surface thereof with mutual cooperation. The energisation means 15 are equipped corresponding to the guide members 2 and energise the guide member 2 to the direction pushing the tips thereof to the inner face of the flutes 52 of the corresponding roll 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an exit guide mechanism for a rolling mill.

[0002]

2. Description of the Related Art An exit guide mechanism 100 of a rolling mill as shown in FIG. 9A is conventionally known. The rolling device P is used, for example, for hot rolling of wire rods.
The material W to be rolled by the pair of rolling rolls 150a and 150b
Is rolled while the cross-sectional shape is defined by the grooves 152a and 152b. The exit guide mechanism 100 is disposed on the exit side of the rolling rolls 150a and 150b.
It has a pair of guide members 101a and 101b, and guides out the material W after rolling while guiding it on the inner surface side. For example, as shown in FIG. 9A, a non-uniform working force is likely to act on the leading end of the material W to be rolled, so that cracks and cracks often occur. In this case, as shown in FIG.
The material W to be rolled is torn in the feed direction from the cracked portion, and there is a possibility that a trouble of winding around the rolls 150a and 150b may occur. Therefore, if the guide mechanism 100 as shown in FIG. 9A is provided, such winding can be prevented.

In the above-mentioned conventional guide mechanism, the guide members 101a and 101b are provided with a roll 15
0a, 150b so as to be in contact with the inside of the grooves 152a, 152b.
07 and bolts 106 are arranged so that the entire position is fixed.

[0004]

By the way, in the above-mentioned conventional guide mechanism 100, the guide members 101a, 1
01b are grooves 152a, 1 in the initial state of attachment.
52b, but the rolling rolls 150a, 150
When the wear progresses with the relative sliding between the gap G and the gap G, a gap G is gradually generated. Then, as shown in FIG.
Is larger than a certain degree, for example, the rolled material W is caught in the gap to cause a misroll of the rolled material W, or the torn rolled material W is forcibly pushed into the gap G as described above, and May be wrapped around the roll. If this happens, the entire rolling line will be stopped, and it will take a great deal of labor, time, and money to recover it.

Therefore, the guide members 101a, 101b
It is necessary to adjust the position of the front end of the groove frequently so that the front end is always kept in contact with the inner surfaces of the grooves 152a and 152b. However, the conventional guide mechanism 1
00, the main body base portion 105 and the mounting holding portion 10
Since the position adjustment was performed by changing the thickness of the liners 110 and 111 disposed between the liner 3 and the liner 3, the adjustment operation was extremely troublesome, and the rolling line had to be stopped in order to perform the adjustment operation. There was a problem that the processing efficiency of rolling was reduced to a considerable extent.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolling device which can maintain a contact state with a rolling roll even when the tip of a guide member is worn out, can be easily adjusted in position, and does not easily cause troubles such as a misroll or chipping of a guide member. It is to provide an exit guide mechanism.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a method for rolling a material to be rolled between a pair of rolling rolls each having a groove on a rolling surface for defining a cross-sectional shape of the material to be rolled. An exit guide mechanism (hereinafter, also simply referred to as a guide mechanism) of a rolling device provided on an exit side of a rolling device for rolling, and has the following requirements in order to solve the above-described problem. A pair of guide members: on both sides of the conveying path of the material to be rolled, the front ends contact the inner surfaces of the corresponding groove portions of the rolling rolls, and at least the side of the front end extends along the conveying path. It is arranged so as to be able to approach and separate from the groove, and guides the material to be rolled and led out by the rolling roll in the groove while cooperating with each other and receiving the material on the inner surface side. Guide member urging means: provided corresponding to each of the guide members, and urges the leading end of the guide member in a direction of pressing against the inner surface of the groove of the corresponding rolling roll.

In the structure of the outlet guide mechanism, the guide member is not completely fixed in position with the front end portion abutting on the inner surface of the groove portion of the rolling roll as in the related art, but is fixed to the groove portion of the rolling roll. It is characterized in that it is disposed so as to be able to approach / separate from it, and its leading end is urged by a guide member urging means so as to be pressed against the inner surface of the groove of the rolling roll. Thereby, even if the leading end of the guide member is worn due to sliding with the rolling roll, the contact state between the guide member biasing means and the inner surface of the groove of the rolling roll is always maintained even when worn. Can be.
As a result, troubles such as catching of the material W to be rolled and chipping of the guide member tip due to an increase in the gap between the rolling roll and the guide member are less likely to occur, and winding of the torn material W around the rolling roll is also ensured. Can be prevented.
Eliminating the gap means that there is no need to adjust the position of the guide member to eliminate the gap, thereby dramatically reducing the frequency of stopping the rolling line for adjustment work. , Line processing efficiency can be improved.

[0009] However, if the position of the guide member is greatly deviated from the original guide position due to the progress of wear of the leading end portion, smooth guiding of the material to be rolled may be hindered. In this case, a guide member moving mechanism is provided for moving each guide member (or guide member and guide member urging means) with respect to the corresponding rolling roll in the transport direction of the material to be rolled and / or the direction opposite to both rolling rolls. Thus, the position of these guide members may be adjusted as needed. However, as described above, since the contact state between the guide member and the rolling roll is maintained, the frequency of the position adjustment is still less required as compared with the conventional outlet guide mechanism.

Next, when the downstream side of the transport path is the rear side and the upstream side is the front side, the rear side of the guide member is rotatably supported by a predetermined base via a rotation fulcrum. By rotating around the rotation fulcrum,
It is possible to adopt a configuration in which the leading end approaches or separates from the groove of the rolling roll. Thereby, the mechanism for approaching / separating the guide member from / to the groove can be simply configured.

The guide member urging means may be configured to include a spring member that elastically urges the leading end side of the guide member against the inner surface of the groove of the rolling roll. By using the spring member, the guide member urging means can be configured as a simple and inexpensive one, and the guide member can be reliably pressed against the rolling roll.

Specifically, the spring member is configured such that one end thereof is held by a predetermined spring support portion, and the other end of the spring member directly or indirectly applies elasticity to the guide member via another member. it can. For example, a spring support is provided so that the relative position to the rolling roll is fixed opposite to the outer surface of the guide member, while the guide member protrudes through the spring support at a position corresponding to the spring support. In addition to providing a projecting member, the projecting member has
A spring stopper can be formed at a position away from the spring support by a predetermined distance on the side opposite to the guide member with respect to the spring support. In this case, the spring member is extrapolated in a compressed state with respect to the projecting member between the spring stopper and the spring support portion, and is inserted into the groove inner surface of the rolling roll with respect to the guide member via the spring stopper and the projecting member. The elastic urging force in the direction of pressing the pressure is applied. By inserting the spring member between the spring stopper on the distal end side of the protruding member and the spring support portion, the guide member urging means can be made compact, and the elastic urging force can be reliably applied to the guide member. it can. Here, the projecting member is
A spring stopper is integrally provided, and a distal end side of the guide member can be a screw member screwed into the guide member,
The distance between the spring member and the spring support can be adjusted according to the amount of screwing. Thus, by changing the screwing amount of the screw member, it is possible to easily adjust the compression amount of the spring member, and furthermore, the elastic biasing force to the guide member.

[0013] More specifically, the guide member may be housed in a case except for at least a portion in contact with the rolling roll, and the rear side may be housed in a case to form an integrated guide unit. In this case, a through hole is formed in the wall of the case to allow the projecting member to pass therethrough, and the wall of the case is used as a spring supporting portion that supports one end of the spring member at a peripheral portion of the through hole. A configuration is possible in which a rotation fulcrum for rotatably supporting the guide member is formed on the rear side of the spring support portion of the case to form the above-described base portion. As described above, by integrally configuring the spring support portion and the base portion as a case, the entire exit guide mechanism can be compactly configured, and can be easily attached to the limited space on the exit side of the rolling device. it can.

In this case, a guide unit mounting base may be provided on the outlet side of the rolling mill, and the guide unit may be detachably mounted on the guide unit mounting base. For example, if a plurality of guide units having guide members of various shapes are prepared, for example, when changing the rolling roll to one having a different groove cross-sectional shape, it is necessary to replace the work with a guide member having a corresponding shape. , In the form of a guide unit.

When the guide members are combined with each other across the material to be rolled, the guide members have a cylindrical shape that follows the peripheral surface shape of the material to be rolled, and each of the tips has a
It can be formed in a shape that follows the inner surface shape of the groove portion of the rolling roll. By forming the guide member in a tubular shape, the guide of the material to be rolled from the rolling device can be smoothly guided. In this case, the leading end of the guide member has a shape that follows the inner surface shape of the groove of the rolling roll, so that a gap is less likely to be formed between the rolling roll and the leading end of the guide member. Can be more reliably prevented.

[0016]

Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a diagram showing an entire configuration of an exit guide mechanism (hereinafter, simply referred to as a guide mechanism) 1 of a rolling mill according to an embodiment of the present invention. In other words, the exit guide mechanism 1 is provided with a pair of rolling rolls 50a, 5
0b, is disposed on the exit side of the rolling device P that rolls the material W to be rolled, and is disposed along the transport path PL of the material W to be rolled and on both sides of the transport path PL. , And a case 3 for holding the guide members 2a and 2b respectively, a main body base portion 5, and the like. The outer peripheral surfaces of the rolling rolls 50a and 50b are formed as rolling surfaces 51a and 51b.
1b are formed with grooves 52a and 52b for defining the cross-sectional shape and dimensions of the material W to be rolled.

The guide members 2a and 2b are located on the downstream side (right side in the drawing) of the transport path PL, and also on the upstream side (left side in the drawing).
Is the front side, the leading ends of the grooves 52a and 52b of the corresponding rolling rolls 50a and 50b (these are combined with each other to form a roll die 53).
And guides the material W to be rolled and led out by the roll rolls 50a and 50b in the roll die 53 in cooperation with each other and received on the inner surface side. As shown in FIG. 2, the guide members 2a and 2b have a cylindrical shape following the shape of the peripheral surface of the rolled material W in a state where the guide members 2a and 2b are combined with each other with the rolled material W interposed therebetween. As shown in FIG. 3,
It is formed in a shape following the inner surface shape of the groove 52a (52b) of the rolling roll 50a (50b).

As shown in FIG. 1, guide members 2a, 2b
The rear side of the guide unit 60 is housed in the case 3 except for the abutting portions with the rolling rolls 50a and 50b.
Is composed. As shown in FIG. 2, the case 3 has, for example, a rectangular tubular shape that covers the outer peripheral surfaces of the guide members 2 a and 2 b, and has a mounting holder 25 on both side surfaces in the width direction.
For example, at predetermined intervals in the height direction of the case 3 (or the center axis direction of the rolling rolls 50a and 50b).
Each of them is formed so as to protrude laterally. The screw shafts 35, 35 are located at predetermined positions on the rear side (FIG. 1) of the rolling rolls 50a, 50b.
The main body base 5 (guide unit mounting base), which is movable in the axial direction of the rolling rolls 50a and 50b and whose position in the front-rear direction is fixed, is disposed on the main body base 5 in the front-rear direction. A mounting portion 5a corresponding to the cross-sectional shape of the case 3 is formed so as to penetrate the case 3. Mounting grooves 5b that open to the inner surface and the rear surface of the case 3 are formed in the widthwise inner side surfaces of the mounting portion 5a at positions corresponding to the mounting holding portions 25 of the case 3 in the front-rear direction. Have been.

As shown in FIG. 1, the case 3 of the guide unit 60 is inserted into the mounting portion 5a from the rear side while each mounting holding portion 25 enters the mounting groove 5b.
The tapered front end surface of the mounting holding portion 25 is positioned by hitting the front end side wall of the corresponding tapered mounting groove 5b. Then, in this state, from the rear side of the case 3, a pressing member 27 is applied corresponding to each of the mounting holding portions 25, and the bolt 26 is screwed into the main body base portion 5 through the pressing member 27, A guide unit 60 is detachably fixed to the main body base portion 5.

A liner 28 and a liner 28 are provided between the mounting holding portion 25 and the bottom surface and the front end wall surface of the mounting groove 5b of the main body base portion 5.
29 is inserted. The liner 28 is guided by the guide unit 60, that is, the guide member 2 according to the thickness.
a, 2b to adjust the position in the front-rear direction, and the liner 29 also has a guide member 2 corresponding to its thickness.
It plays a role in adjusting the positions of a and 2b in the direction facing the rolling rolls 50a and 50b.

Next, a projection 8 is formed on the inner surface of the rear side of the case 3 so as to correspond to the guide members 2a and 2b, and a projection is also formed on the outer surface of the guide members 2a and 2b. 9 are formed. The guide members 2 a and 2 b are rotatably supported in the case 3 by a rotation fulcrum 7 formed by engagement of the projections 8 and 9 with each other, and rotate around the rotation fulcrum 7. The guide members 2a and 2b are configured such that the tips thereof can approach and separate from each other in the direction in which the rolls 50a and 50b face each other.

On the other hand, through holes 14 are formed in both side walls on the front side of the case 3, and bolts 12 as projecting members penetrate through the case 3 in the through holes 14 and are formed on the walls of the guide members 2 a and 2 b. It is screwed into the part. A peripheral portion of the through hole 14 of the case 3 is formed as a spring support portion 10, while a washer 16 is provided on the bolt 12 so as to be in contact with the spring support portion 10, and the washer 16 and a bolt head as a spring stopper are provided. The bolt 12 is provided with a spring member 15 as a guide member urging means between the bolt 17 and the portion 17.
Are extrapolated in a compressed state. Thereby, the spring member 1
5 is a guide member 2a (2b) via a bolt 12, the tip of which is a groove 52a (5b) of a rolling roll 50a (50b).
2b) elastically bias in a direction pressed against the inner surface.
When the screwing amount of the bolt 12 into the guide member 2a (2b) is changed, the head 17 and the spring support 10 are changed.
And the amount of compression of the spring member 15 changes. Thereby, the guide member 2a by the spring member 15
(2b) The elastic biasing force can be adjusted.

A stopper 20 is formed on the periphery of the rear end of the case 3 so as to protrude inward, and a spacer 21 is mounted between the stopper 20 and the rear end surfaces of the guide members 2a and 2b. ing. Then, as shown in FIG. 6, by adjusting the thickness of the spacer 21 in the front-rear direction, the rolling roll 50a (5) of the guide member 2a (2b) is adjusted.
0b) can be adjusted in the front-rear direction. Note that, with this position adjustment, the guide members 2a (2
b) slides in the front-back direction in the case 3,
In order to avoid interference between the bolt 12 and the wall of the case 3 due to the sliding movement, as shown in FIG. 1B, the above-described through hole 14 is formed in a long hole shape extending in the sliding direction. ing.

Next, as shown in FIG. 1A, screw shafts 35, 35 extending along the axial direction of the rolling rolls 50a, 50b are screwed to both ends of the main body base portion 5, respectively. When the screw shaft 35 is rotationally driven by a driving means such as a motor (not shown), the outlet guide mechanism 1 is movable in the axial direction of the rolling rolls 50a and 50b. Thereby, as shown in FIG. 4, for example, when a plurality of roll dies 53 having various cross-sectional shapes are formed in the axial direction of the rolling roll 50, the exit guide mechanism 1 is selected to one of the roll dies 53. Positioning can be achieved.

Hereinafter, the operation of the outlet guide mechanism 1 will be described. That is, the guide members 2a and 2b in FIG.
Of the rolls 50a, 50b are groove portions 52a, 5b.
2b, the rolls 50a, 50a,
When the rolled material W is introduced and rolled by rotating the roll 50b, the rolled material W after rolling is discharged while being guided on the inner surface side by the guide members 2a and 2b. here,
As shown in FIG. 5A, the rolling rolls 50a (50b)
When the tip of the guide member 2a (2b) wears due to sliding between the guide member 2a (2b) and the groove 52a (52b), the guide member 2a (2b) is attached to the spring member 15 as shown in FIG. The contact state with the inner surface of the groove 52a (52b) is always maintained while rotating around the rotation fulcrum 7 by the force. Therefore, even if the tip portion of the guide member 2a (2b) is worn as in the related art, a gap is hardly generated between the guide member 2a (2b) and the groove portion 52a (52b). 5 to 7 show only one side of the exit guide mechanism with respect to the transport path PL.

Here, the above-mentioned wear causes the guide member 2
In the case where the leading ends of the a and 2b are separated from each other in the direction facing the rolling rolls 50a and 50b and greatly deviate from the regular guide positions, as shown in FIG. 6, the stopper 20 of the case 3 and the guide member 2a ( 2b) The spacer 21 between the rear end and the guide member 2a (2b) is pushed forward by removing the spacer 21 and attaching the spacer 21 having a large thickness. As a result, the leading end portions of the guide members 2a (2b) are respectively inserted into the groove portions 5 of the corresponding rolling rolls 50a (50b).
2a (52b) are moved in the direction approaching each other along the inner surface, and the state of displacement is eliminated.

In the case of extreme wear that cannot be handled within the adjustment range of the spacer 21, the case 3 is temporarily removed from the main body base portion 5 to remove the liners 28 and / or 29, and the liners 28 and / or 29 are removed. The thickness can be adjusted by grinding or the like, and then re-attached to adjust the position. Also, at the time of this removal, the inner shape of the regular grooves 52a and 52b is approximated.
If the leading ends of the guide members 2a and 2b are corrected by grinding or the like, it is possible to reliably prevent the workpiece W from sticking.

As shown in FIG. 7, one end of the spring member 15 is bent toward the guide member 2a (2b) side to pass through the inside of the spring member 15, and the leading end is guided to the guide member 2a (2b).
It is also possible to adopt a configuration in which the component is directly fixed to b). Further, the rotation fulcrum 7 may be configured by a rotation shaft instead of the protrusion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing the overall configuration of an exit guide mechanism of a rolling mill according to the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a schematic diagram illustrating an example of an exit guide mechanism configured to be movable in the axial direction with respect to a plurality of rolling rolls.

FIG. 5 is an operation explanatory view of the guide mechanism of FIG. 1;

FIG. 6 is another operation explanatory view.

FIG. 7 is a conceptual diagram showing a modified example of the guide member urging means.

FIG. 8 is an explanatory diagram showing a state in which a rolling roll is wound.

FIG. 9 is a plan sectional view of a conventional guide mechanism.

[Description of Signs] W Rolled Material 1 Exit Guide Mechanism of Rolling Machine 2 Guide Member 3 Case 5 Main Body Base 7 Rotation Support 10 Spring Support (Case) 12 Bolt (Protruding Member, Other Member) 14 Through Hole 15 Spring Member (guide member urging means) 50 Rolling roll 52 Groove

Claims (6)

[Claims] 1. A rolling device for rolling a material to be rolled between a pair of rolling rolls each having a groove on a rolling surface for defining a cross-sectional shape of the material to be rolled is provided at an outlet side thereof. An exit guide mechanism of a rolling device, wherein both sides of the conveying path of the material to be rolled are sandwiched along the conveying path while a tip end abuts on an inner surface of the groove of a corresponding rolling roll, and At least the tip side is arranged so as to be able to approach / separate from the groove, and the material to be rolled and led out by the rolling roll in the groove is cooperated with each other and received on the inner surface thereof to guide the material. And a guide member biasing hand provided corresponding to each of the guide members and biasing the leading end of the guide member against the inner surface of the groove of the corresponding rolling roll. Exit guide mechanism of the rolling device characterized by comprising a, the. The guide member is rotatably supported on a predetermined base portion via a rotation fulcrum portion when the downstream side of the conveyance path is a rear side and the upstream side is a front side. By rotating around the rotation fulcrum,
2. The exit guide mechanism of a rolling device according to claim 1, wherein the leading end approaches and separates from the groove of the rolling roll. 3. The guide member urging means according to claim 1, wherein the guide member urging means includes a spring member that elastically urges the leading end side of the guide member against the inner surface of the groove of the rolling roll. Exit guide mechanism for rolling equipment. 4. A spring support portion is provided so as to face an outer surface of the guide member so that a relative position with respect to the rolling roll is fixed, wherein the guide member has a position corresponding to the spring support portion. A protruding member that protrudes through the spring support is provided, and the protruding member is provided at a position separated from the spring support by a predetermined distance on the side opposite to the guide member across the spring support. A stopper is formed, and the spring member is externally inserted in a compressed state with respect to the protruding member between the spring stopper and the spring support portion, and the guide member is interposed between the spring stopper and the protruding member. 4. An elastic biasing force in a direction of pressing against the inner surface of the groove portion of the rolling roll is applied to the rolling roll.
3. The exit guide mechanism of the rolling device according to claim 1. 5. The guide member has a rear side accommodated in a case except for at least a contact portion with the rolling roll to form an integrated guide unit, and the case has a wall portion. A through hole is formed to allow the member to pass therethrough, and a peripheral portion of the through hole of the case is formed as the spring supporting portion, and a rear side of the case from the spring supporting portion is the guide member. 5. The exit guide mechanism of the rolling device according to claim 4, wherein a rotation fulcrum for rotatably supporting the roller is formed to constitute the base. 6. The guide member, when combined with each other across the material to be rolled, has a cylindrical shape that follows the shape of the peripheral surface of the material to be rolled. The exit guide mechanism of a rolling device according to any one of claims 1 to 5, wherein the exit guide mechanism is formed in a shape following the inner surface of the groove portion of the rolling roll.