JP2926056B1 - General-purpose universal rolling mill - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To use a small-diameter horizontal roll when changing a model to a 2 high mill, to adjust the vertical and horizontal positions of a rolling line, and to provide a guide device between housing posts in a state where the model is changed to a 2 high mill. Provided is a general-purpose universal rolling mill that can be securely mounted and can roll a variety of materials and shapes to be rolled having different sizes and shapes. SOLUTION: A pair of housing posts 2 and 3 arranged opposite to each other in a direction orthogonal to the rolling lines L ₁ and L ₂ and at least a pair of upper and lower horizontal rolls 5 and 6 are provided.
And a pair of right and left vertical rolls, and vertical roll yokes 20 and 21 for supporting the vertical rolls so as to be able to advance and retreat in the horizontal direction. ₁
· L ₂ and then movable in the direction perpendicular, with a changeable housing post 2-3 intervals by tightening the expansion device 15 between housing posts 2, 3 via a removable spacer 13, A screw jack 29 and a traction mechanism 33 are interposed between the upper surface of the fixed base 4 and the lower surfaces of the housing posts 2 and 3, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called two-high mill capable of rolling a sheet pal material (steel sheet pile) or an angle iron in a universal rolling mill capable of rolling shaped steel such as H-section steel and channel material. The present invention relates to a general-purpose universal rolling mill that can be changed in type.

[0002]

2. Description of the Related Art In a general universal rolling mill,
A structure in which the distance between housing posts can be changed has been proposed. This rolling mill is disclosed in JP-B-63-25843.
As described in the publication, a pair of housing posts that are arranged opposite to each other across the rolling line, at least one of which is movable in a direction perpendicular to the rolling line, and a prestress for rigidly connecting both housing posts. A fastening device;
A distance piece that is detachably interposed between both housing posts and makes the post interval variable,
Both housing posts are connected together with the distance piece by the prestress fastening device.

[0003]

However, the universal rolling mill described in the above publication has problems to be improved in the following points.

Since the vertical roll yoke has a structure that cannot be moved or opened and closed, it is difficult and time-consuming to replace a horizontal roll, and it is difficult to change the type to a 2-high mill. In addition, even if the model can be changed to a 2-high mill, the drive spindle may interfere with the vertical roll yoke, and it is particularly difficult to use a small-diameter horizontal roll.

Although the distance between the housing posts can be changed, the vertical position of the housing (post) cannot be adjusted. For this reason, for example, the range of the flange height of the rollable H-section steel is narrow, and the product size is limited.

[0006] Since the distance piece is connected to a middle position in the width direction of the housing with a distance piece interposed therebetween, it is difficult to mount a guide device for a material to be rolled such as a shaped steel between housing posts using a widening mechanism. is there.

[0007] Because it can only be used as a universal rolling mill, it is impossible to roll materials of various types and shapes having different sizes and shapes.

The present invention has been made in view of the above points, and can use a small-diameter horizontal roll when changing the model to a 2-high mill, adjust the vertical and horizontal positions of the rolling line, and change the model to a 2-high mill. It is an object of the present invention to provide a universal universal rolling mill capable of reliably mounting a guide device between housing posts in a changed state, and capable of rolling various types and shapes of rolled materials having different sizes and shapes.

[0009]

In order to achieve the above-mentioned object, a general-purpose universal rolling mill according to the present invention comprises: a) a pair of housings arranged to face a rolling line in a direction orthogonal to the rolling line. A universal rolling mill including a post, at least a pair of upper and lower horizontal rolls (horizontal work rolls), a pair of left and right vertical rolls (vertical work rolls), and a vertical roll yoke that supports the vertical rolls so as to be able to advance and retreat in the horizontal direction. And b) at least one of the pair of housing posts is configured to be movable in a direction (width direction) perpendicular to the rolling line with respect to the fixed base,
A housing post interval can be changed by tightening the housing posts with a telescopic device through a detachable spacer, and c) an elevating mechanism and a traction mechanism between the fixed base upper surface and the housing post lower surface. Are interposed.

According to the universal rolling mill having the above structure, the other housing post is moved in the width direction with respect to one housing post by extending or contracting the expansion and contraction device so that the predetermined spacing is obtained. The distance between the housing posts can be changed by tightening the telescopic device by tightening, and the housing post is raised or lowered by the elevating mechanism while the traction mechanism between the fixed base and the housing post is loosened. After adjusting the vertical position of the post, the housing post can be fixed by being pulled by the pulling mechanism. Therefore, for example, the range of the flange height of the rollable H-section steel is wide, the product size is wide, and
It can be applied to rolling of various types and shapes of rolled materials having different sizes and shapes.

According to a second aspect of the present invention, at least one of the vertical roll yokes can be opened and closed in a horizontal direction or a vertical direction together with a vertical roll supported by the vertical roll yoke.

According to the second aspect of the invention, for example, by configuring the vertical roll yoke on the drive side to be openable and closable, interference between the vertical roll yoke and the drive spindle can be avoided, and a small-diameter roll can be used. become able to. In other words, when the work roll is replaced with a work roll having a smaller diameter, the upper and lower work roll driving spindles approach each other and interfere with the vertical roll yoke arranged so as to be sandwiched therebetween. By opening the side vertical roll yoke, it is possible to move away from the interference position with the drive spindle. On the other hand, by allowing the vertical roll yoke on the operation side to be openable and closable, it becomes possible to automatically replace the horizontal roll mechanically.

According to a third aspect of the present invention, the rolled material guide device serving also as a spacer is detachably interposed between the housing posts in a state where the interval between the housing posts is enlarged. By opening the vertical roll yokes and tightening between the housing posts with the telescopic device, the type can be changed to a 2-high mill.

According to the third aspect of the present invention, the rolled material guide device can be securely sandwiched and fixed between the housing posts in the widened state of the housing posts. Therefore, it is possible to roll a shape steel that cannot be rolled by a universal rolling mill such as a sheet pal material or an angle steel, and it is possible to roll materials of various types and shapes having different sizes and shapes.

According to a fourth aspect of the present invention, side bases are respectively erected on both front and rear surfaces of the movable housing post, and a direction perpendicular to a rolling line of the housing post is provided between the housing post and the side base. And a wedge-shaped clamp member for restricting the movement of the clamp can be interposed.

According to the fourth aspect of the invention, after the housing post is moved to the predetermined position, the housing post is fixed to the side base via the clamp member, whereby the housing post can be firmly erected.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A general-purpose universal rolling mill according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of a general-purpose universal rolling mill, FIG. 2 is a left side view of the same, FIG. 3 (a) is a front view showing a part of an upper widening device of FIG. 3B is a sectional view taken along line AA of FIG. 3A, and FIG. 3C is a sectional view taken along line BB of FIG.
3 (d) is a right side view of FIG. 3 (a), FIG. 4 is a plan view showing a pair of right and left vertical roll yokes, and FIG. 5 is a front view showing a widened state of the general-purpose universal rolling mill of FIG. FIG. 6 and FIG. 6 are sectional views taken along line DD of FIG.

As shown in FIGS. 1 and 2, the universal rolling mill 1 of this embodiment includes a pair of left and right housing posts 2 and 3, which are mounted on a fixed base 4. Have been. In the case of this example, the operation side housing post 2 on the left side in FIG. 1 is movable on the fixed base 4 and on the side base 4b forming a part thereof in the left-right direction. The housing posts 2 and 3 are connected by a pair of upper and lower widening devices 9 so as to be able to widen above and below the intermediate position in the vertical direction. FIG.
(a) As shown in (b), a housing extension tie beam 1 formed of a rectangle having a vertically long cross section from an operation side housing post 2.
0 is extended toward the drive side housing post 3, and a square rod 11 is attached to one end of the housing extension tie beam 10.
Are connected at one end. The square rod 11 penetrates the housing extension 12 and the drive housing post 3 formed of a vertically long rectangular frame, and protrudes outward on the drive side.
One end of the housing extension portion 12 of the rectangular frame is integrally fixed to the drive side housing post 3, and a spacer 13 having an open lower end with respect to the outwardly protruding portion of the square rod 11 is detachable via a lifting cylinder 14 as a lifting mechanism, and It is arranged to be able to move up and down freely. The upper end of the lifting cylinder 14 is fixed to the housing post 3 and is suspended.

One end protruding portion of the square rod 11 is formed in a screw portion 11a, and a nut 11b is screwed as shown in FIG. 3 (d). A hydraulic cylinder 15 as a telescopic device is interposed between the housing posts 2 and 3 above or below the housing extension tie beam 10 and the square rod 11, respectively.

As shown in FIG. 2, a pair of upper and lower horizontal rolls 5 and 6 sandwiching the rolling line L
It is pivoted between. Reference numeral 16 in FIG. 1 denotes a lowering device for the upper horizontal roll 5. Reference numeral 17 in FIG. 2 denotes a wheel provided on the operation side housing post 2. The wheel 17 is contacted with a track 18 provided on the side base 4 b and rolls when the operation side housing post 2 moves. I do. Also, as shown in FIG.
8 are supported on the vertical roll yokes 20 and 21 movably in the left and right directions with the vertical roll sets 7A and 8A, respectively, and are advanced and retracted in the width direction in the horizontal direction by the pressure reduction devices 22 and 23. In this example, the drive-side vertical roll yoke 21 is supported on the drive-side housing post 3 so as to be rotatable in a horizontal direction about a vertical axis 24. Further, an intermediate position of the main body of the hydraulic cylinder 25 is pivotally connected to the housing post 3 via a bracket 25b. . With this configuration,
The vertical roll yoke 21 is opened forward (clockwise) of the rolling mill 1 by contracting the piston rod 25a of the hydraulic cylinder 25, and the vertical roll yoke 21 is extended by rolling the piston rod 25a back to the original state. It returns to the closed state inside (counterclockwise). As described above, since the drive-side vertical roll yoke 21 can be opened, the drive spindle 27.
8 (see FIG. 4) and the drive-side vertical roll yoke 21 are avoided.

On the other hand, the operating side vertical roll yoke 20 is rotatably supported up and down around a horizontal shaft 20a at the front end as shown in FIG.
0b is integrally protruded. An intermediate position of the main body of the hydraulic cylinder 26 is pivotally attached to the ceiling of the housing main body 1a, and the tip of the piston rod 26a is pivotally attached to the tip of the bracket 20b. Thereby, the piston rod 26
The opening and closing operation of the yoke 20 in the vertical direction can be performed by the expansion and contraction operation of “a”. Therefore, it is possible to realize a so-called automatic roll exchange system that automatically exchanges a set of a pair of upper and lower horizontal rolls 5 and 6 and a pair of left and right vertical rolls 7 and 8. The rolling operation can be performed as a complete 2-high mill.

As shown in FIG. 1, the housing post 2
A pair of lifting screw jacks 29 as a lifting mechanism is interposed between the lower surface of the base 3 and the upper surface of the fixed base 4, and the screw jack 29 is rotated by a common drive motor 30 via a drive shaft 30 a. The housing posts 2 and 3 can be moved up and down. Further, in this example, since the operation side housing post 2 is configured to be movable by the expansion and contraction operation of the hydraulic cylinder 15, if the hydraulic cylinder 15 is extended, the housing post 2 can be easily moved to the operation side.

As shown in FIG.
Inside the lower surface of the screw 3, a hydraulic pressure as a pulling mechanism for pulling the housing posts 2 and 3 toward the fixed base 4 in a direction opposite to the extension direction of the screw jack 29, that is, in a direction to offset the play of the screw jack 29. A cylinder 33 is interposed between the cylinder 33 and the fixed base 4. The head 33b is provided at the tip of the piston rod 33a of the hydraulic cylinder 33.
Are integrally formed, and are slidably fitted in a width direction in a fitting frame 34 fixed to the fixed base 4. In addition, the above-mentioned side bases 4b are respectively provided upright before and after the housing posts 2 and 3. An engaging groove 35 is formed in the side base 4b on the operation side along the width direction of the rolling mill 1. A mounting seat 2c of a wedge-shaped clamp member 36 is formed on both front and rear surfaces of the operation side housing post 2, and the clamp member 36 is detachably locked between the mounting seat 2c and the locking groove 35. Thereby, the operation side housing post 2 is locked to the side base 4b via the clamp member 36, and the housing post 2 is firmly fixed at the moving position.

As shown in FIG. 2, a lifting rail 31 for raising and lowering the rolls 5 and 6 chock is provided in the housing body 1a, and the rolls 5 and 6 chock can be raised and lowered by the hydraulic cylinder 40. A lifting rail 31 is provided between the housing posts 2 and 3, and the lifting rail 31 is
Cannot move with. For this reason, the housing post 2
The hydraulic cylinder 32 is provided as shown in FIG. In addition, since the hydraulic cylinder 40a attached to the housing post 2 shown in FIG. 1 is contracted while the housing 2 moves, a gap is formed between the housing 2 and the lifting rail 31.
The head of the hydraulic cylinder 32 does not slide on the lifting rail 31 and the head of the hydraulic cylinder 32 does not slide on the lifting rail 31.

FIG. 2 shows a state in which the housing body 1a is almost at the lowermost limit.
In the fixed state, a gap is formed between the wheel 17 and the track 18 on the base 4b (y) as shown in FIG. When the housing posts 2 and 3 are moved from this state to the widened state, the following procedure is performed. First, after releasing the side clamp state of the housing post 2 by the locking groove 35 and the clamp member 36, the hydraulic jack 33 is set in a free state, that is, a state in which the rod can freely expand and contract according to an external force.

The screw jack 29 is contracted.
As a result, a gap is formed at the position x, the gap (y) is eliminated, and the wheel 17 is placed on the track 18 of the base 4b, so that the housing post 2 can be moved in the widening direction. .

When the hydraulic cylinder 15 is extended, the housing post 2 moves the track 1 of the side base 4b.
The wheel 17 rolls on 8 and moves in the widening direction.

The screw jack 29 is extended, and the housing posts 2 and 3 are raised to a predetermined height. As a result, the gap at the x location disappears, and at the same time, a gap occurs at the y location.

The hydraulic jack 33 is pressed in the pulling direction and is clamped on the fixed base 4.

After the above procedure, the housing post 2 is returned to the side clamp state by the locking groove 35 and the clamp member 36.

FIGS. 5 and 6 show the widened state, in which the spacer 13 is lifted upward by the lifting cylinder 14, the clamp member 36 is removed as described above, and the operating side housing post 2 is connected to the side base 4b. The drive-side housing post 3 supported on the track 18 via the wheels 17 and fixed by extension of the pair of upper and lower hydraulic cylinders 15 while floating above the fixed base 4.
In contrast, the operation side housing post 2 moves to the left side in FIG. In this state, the yoke 20 moves integrally with the housing post 2, where the hydraulic cylinder 2
The yoke 20 is opened upward by contracting the sixth piston rod 26a. When the piston rod 25a of the hydraulic cylinder 25 is contracted, the drive side yoke 21 is also opened forward in the horizontal direction.

The front and rear surfaces between the housing posts 2 and 3 are provided with guide devices 37 and 3 for rolling material (not shown).
8, each guide device 37, 38 has a distance space portion 37a, 38 having an h-shaped cross section as shown in FIG.
The upper ends of the distance spaces 37a and 38a are fitted to the lower ends of the square rods 11 by contracting the hydraulic cylinder 15, and both sides of the distance spaces 37a and 38a are square rods. 11 is held by the housing extension 12. In this state, the clamp member 36 is locked between the mounting seats 2c on both front and rear sides of the operation side housing post 2 and the locking groove 35. Thus, the model change to the 2-high mill is completed. When it is necessary to change the vertical position (height) of the rolling line L (FIGS. 2 and 6) according to the size of the material to be rolled, the traction force of the hydraulic cylinder 33 and the locking groove 3
In a state where the side clamp state by the clamp member 5 and the clamp member 36 is released, the screw jack 29 is extended or contracted to move the housing post 2.3 up and down. While fixing to the fixed base 4,
Side clamping is performed by the locking groove 35 and the clamp member 36.

The general-purpose universal rolling mill 1 of this embodiment is constructed as described above, and this rolling mill 1 is used in the following manner. That is, as shown in FIG. 1, the use as a normal universal rolling mill is performed by setting the space between the housing posts 2 and 3 in a narrow state, and performing a rolling operation without lowering the vertical rigidity of the rolling mill. It can be carried out. L ₁ in FIGS. 1 and 4 are rolling line when used as a universal mill.

On the other hand, when used as a two-high mill, the spacing between the housing posts 2 and 3 is set to a widened state, and guide devices 37 and 38 which also serve as spacers are sandwiched between the housing posts 2 and 3 and mounted. Then, by opening at least the drive side vertical roll yoke 21 forward, the contact between the upper and lower horizontal rolls 5 and 6 can be made larger. In this state, the rolling operation as a 2-high mill can be performed.
May be opened upward. FIGS. 1 and 4 L ₂ in-Figure 5 is a rolling line when used as a 2 Haimiru.

When it is necessary to change the height of the rolling line L when used as a universal rolling mill or a two-high mill, a screw jack 29 as an elevating mechanism is required.
The height of the rolling line can be changed by raising or lowering the housing posts 2 and 3 with respect to the fixed base 4 by using a hydraulic cylinder 33 as a traction mechanism for canceling the backlash.

Although the embodiment of the present invention has been described above, the present invention can be implemented as follows.

A screw jack can be used in place of the hydraulic cylinder 15 as an expansion / contraction device that constitutes a part of the widening device 9. In this case, the housing extension tie beam 10 and the square rod 11 are arranged in front of and behind. Alternatively, a screw jack can be interposed between the housing posts 2 and 3 through the interior of the housing extension tie beam 10 and the square rod 11.

The operation side housing post 2 can be locked to the side base 4 b via the clamp member 36, so that a lateral gap between the housing post 2 and the side base 4 b is eliminated and the operation side housing post 2 can be firmly fixed to the base. However, it is also possible to simplify the configuration by omitting those constituent members.

[0040]

As is apparent from the above description,
The general-purpose universal rolling mill according to the present invention has the following excellent effects.

(1) According to the first aspect of the present invention, the type can be changed between a universal rolling mill and a 2 high mill, and when used as a universal rolling mill, the space between the housings (posts) is narrow. To increase the mill stiffness,
In addition, the pass line can be adjusted by the elevating device. As a result, for example, the range of the flange height of the rollable H-section steel is widened, and the product size is wide. On the other hand, when used as a 2 high mill, a smaller diameter horizontal roll can be used, which not only makes the operation of the roll more economical,
Since the space between the housings (posts) is used with a wide width, a long roll can be used, and the number of gullivers can be increased. Therefore, a single rolling mill according to the present invention can employ two types of rolling mills, a universal rolling mill and a two-high mill, and furthermore, each rolling mill has an advantageous surface of a single rolling mill. Without sacrificing, the advantageous aspects of both types can be combined and utilized, and the invention can be applied to rolling of various types and shapes of rolled materials having different sizes and shapes.

(2) According to the second aspect of the invention, for example, the vertical roll yoke on the drive side is configured to be openable and closable, so that the interference between the vertical roll yoke and the drive spindle, which is exchanged in the state of being changed to the 2-high mill, is eliminated. It can be avoided and smaller diameter rolls can be used. Further, by allowing the vertical roll yoke on the operation side to be opened and closed, the exchange of the horizontal roll and the vertical roll can be performed automatically.

(3) According to the third aspect of the present invention, the rolled material guide device can be securely held and fixed between the housing posts in the widened state of the housing posts. Shaped steel that cannot be rolled can be rolled, and it is possible to roll materials of various types and shapes with different sizes and shapes.

(4) According to the fourth aspect of the present invention, after the housing post is moved to the predetermined position, the housing post is fixed to the side base via the clamp member, so that the housing post can be firmly erected at the predetermined position. it can.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a general-purpose universal rolling mill according to the present invention.

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

3 (a) is a front view showing a part of the upper widening device of FIG. 1 with a part omitted, FIG. 3 (b) is a cross-sectional view taken along line AA of FIG. 3 (a),
FIG. 3C is a sectional view taken along the line BB of FIG. 3A, and FIG.
It is a right view of (a).

FIG. 4 is a plan view showing a pair of left and right vertical roll yokes.

FIG. 5 is a front view showing a widened state of the universal rolling mill of FIG. 1;

FIG. 6 is a sectional view taken along line DD of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 General-purpose universal rolling mill 1a Housing main body 2.3 Housing post 4 Fixed base 4b Side base (fixed base) 5.6 Horizontal roll 7.8 Vertical roll 9 Widening device 10 Housing extension tie beam 11 Square rod 12 Housing extension 13 Spacer 14 Lifting Cylinder 15 Hydraulic Cylinder (Telescopic Device) 17 Wheel 18 Track 20 ・ 21 Vertical Roll Yoke 27 ・ 28 Drive Spindle 29 Screw Jack (Elevating Mechanism) 31 Lifting Rail 33 Hydraulic Cylinder (Traction Mechanism) 37 ・ 38 Guide Device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21B 13/10 B21B 31/02

Claims (4)

(57) [Claims] 1. A pair of housing posts disposed opposite to each other across a rolling line in a direction orthogonal to the rolling line,
In a universal rolling mill having at least a pair of upper and lower horizontal rolls, a pair of left and right vertical rolls, and a vertical roll yoke that supports the vertical rolls so as to be able to advance and retreat in the horizontal direction, at least one of the pair of housing posts is provided. The movable base is configured to be movable in a direction perpendicular to the rolling line with respect to the fixed base, and the distance between the housing posts can be changed by tightening a space between the housing posts by a telescopic device via a detachable spacer. A universal rolling mill having a lifting mechanism and a traction mechanism interposed between an upper surface and a lower surface of the housing post. 2. The universal rolling mill according to claim 1, wherein at least one of the vertical roll yokes can be opened and closed in a horizontal direction or a vertical direction together with a vertical roll supported by the vertical roll yoke. 3. A structure in which the rolled material guide device serving also as a spacer is removably interposed between the housing posts in a state where the housing post interval is enlarged, and the vertical roll yoke is opened, The universal rolling mill according to claim 2, wherein the type can be changed to 2 high mills by tightening the housing posts with an expansion device. 4. A wedge-type system in which side bases are respectively erected on both front and rear sides of the movable housing post, and a movement of the housing post between the housing post and the side base in a direction orthogonal to a rolling line is defined. The general-purpose universal rolling mill according to any one of claims 1 to 3, wherein the clamping member is configured to be interposed.