JP3696974B2 - Shape steel hot press straightening machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shape steel hot press straightening machine that performs press correction from a direction orthogonal to the horizontal direction of conveyance of the shape steel in the manufacture of the shape steel.
[0002]
[Prior art]
Most of the bending and twisting of the shape steel are caused by asymmetric elongation in hot rolling, temperature difference in the product, and collision with the conveyance table at the product end during conveyance.
[0003]
Conventionally, straightening of shaped steel products is generally performed by roller straightening or press straightening in a cold process, and for hot press straightening, a shaped steel having a plurality of opposing open and close sets of gold. No. 58-43820 discloses a hot press bend straightening machine. Hot straightening of shaped steel products has a smaller product rigidity than cold, so it can be done with smaller equipment than cold equipment and can be expected to reduce press work load during the refining process. Is.
[0004]
[Problems to be solved by the invention]
However, correction with heat can provide an effect with a small correction force, but may cause unnecessary deformation due to low product rigidity.
[0005]
In particular, when press correction is performed from a direction perpendicular to the horizontal direction of conveyance of the shape steel, there arises a problem that bending deformation occurs between the press portion in the longitudinal direction of the shape steel and the portion not pressed with the press portion as a fulcrum.
[0006]
This problem is caused by the deviation between the shape steel transport core and the center core of the press. As a countermeasure, it can be considered that the product transport core is always kept constant by a guide such as a guide roller. Triggers a pickpocket.
[0007]
In addition, since the product is conveyed while being deformed, there is a problem that guide positioning is difficult, which is not practical.
[0008]
The present invention relates to a shape steel hot press straightening machine that performs press correction from a direction perpendicular to the horizontal direction of conveyance of the shape steel. A straightening machine is provided.
[0009]
[Means for Solving the Problems]
The present invention relates to a shape steel hot press straightening machine that performs press straightening from a direction orthogonal to the horizontal direction of conveyance of the shape steel. In the shape steel hot press straightening machine, the press straightening machine is separated into a press body and a fixed base of the press straightening machine. The press main body is provided so as to be operable in an arbitrary direction within a horizontal plane with respect to the fixed base in accordance with the deviation of the product.
[0010]
In order to be able to operate in any direction within the horizontal plane, for example, the press body and the fixed base are connected by a flexible body, or spherical bearings or combined straight lines are used to operate the corrector main body in any horizontal direction. Support by moving bearings.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic view showing the arrangement of a shape steel finish rolling mill and a hot straightening machine.
[0012]
The straightening of the shaped steel product 1 is performed at a temperature of approximately 400 ° C. or higher in the subsequent process of the finish rolling machine 2. The process is performed after finishing rolling and midway through the cooling bed. After the finishing rolling machine 2 is processed, the shaped steel product 1 is conveyed into the press straightening machine 4 by the conveying roll 3. The press straightening machine is a well-known shape steel hot press straightening machine having a press portion provided with a metal plate for pressing a shape steel from a direction orthogonal to a conveyance horizontal direction.
[0013]
【Example】
Example 1
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
[0014]
In FIG. 2, the hot straightening machine 4 includes a fixing base 5 for fixing the hot straightening machine 4 and a straightening machine main body 7 suspended from the fixing base 5 by flexible bodies 6 a and 6 b such as steel wires. The machine body 7 is the same as that of a well-known hot press straightening machine for shaped steel, and a press part 7b on which a metal 7a is disposed is supported by a frame part 7c. The straightening machine body 7 winds or unwinds the flexible bodies 6a and 6b by the motors 8a and 8b, and tilts them up and down.
[0015]
In the above-described configuration, the shaped steel product 1 is straightened by the metal 7a from both sides at the press portion 7b of the straightening machine main body 7 in the straightening machine. If there is a deviation between the shaped steel product conveyance core and the center core of the press, the straightening is performed. The machine body 7 can be freely operated within a certain range freely in the front-rear and left-right directions by the flexible bodies 6a, 6b following the displacement of the shaped steel product 1. Therefore, prevention of bending deformation of the shaped steel product 1 can be achieved. Since the range in which the operation is required in the front-rear and left-right directions is determined from the bending deformation prevention range of the product, the size, length, etc. of the flexible body may be appropriately determined as necessary.
[0016]
Moreover, it can respond | correspond freely also to the shaped steel product 1 which has an angle in the press surface like the rail material shown in FIG. 2 by adjusting the length of the flexible bodies 6a and 6b.
[0017]
This makes it possible to press in the direction of the symmetrical axis of the product, and is effective in preventing product twist during pressing. Further, a swing prevention mechanism (not shown) of the press part 7b may be provided in order to prevent the press part 7b from shaking and coming into contact with the product during product conveyance before and after the start of pressing.
[0018]
Example 2
FIG. 3 is a cross-sectional view taken along line AA of FIG. 1, showing another embodiment of the hot press straightening machine for section steel according to the present invention.
[0019]
In FIG. 3, the hot straightening machine 4 includes a fixing base 5 and a straightening machine main body 7. In the straightening machine main body 7, a press part 7b on which a metal 7a is disposed is supported by a frame part 7c. . On the fixed base 5, a straightening machine main body 7 having a spherical bearing 9 for freely moving in the front-rear and left-right directions is disposed.
[0020]
In the above-described configuration, when there is a deviation between the shaped steel product conveyance core and the center core of the press, the straightening machine main body 7 follows the deviation of the shaped steel product 1 by the spherical bearing 9 in the front / rear / right / left direction. Since it can operate freely, it can prevent bending deformation of the product.
[0021]
Further, a cylinder 10 for restoring the press portion to a predetermined position is provided in order to prevent contact between the press portion and the product before and after pressing.
[0022]
Instead of spherical bearing, a compound linear bearing may be used.
[0023]
【The invention's effect】
According to the present invention, when pressing is performed from a direction orthogonal to the horizontal direction of conveyance of the shape steel, the press main body can be operated in an arbitrary direction within a horizontal plane with respect to the fixed base following the deviation of the shape steel product. Because it is provided separately from the fixed base, there is no bending deformation between the press part in the longitudinal direction of the shaped steel product and the part that is not pressed with the press part as a fulcrum, and no guide roller is required, so there is no generation of scratches This makes it possible to perform hot press correction.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an arrangement of a shape steel finish rolling mill and a hot straightening machine.
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 in an embodiment of a hot press straightening machine for section steel according to the present invention.
FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 in another embodiment of the hot press straightening machine for section steel according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shaped steel product 2 Finishing rolling mill 3 Conveying roll 4 Hot straightening machine 5 Fixing base 6a, 6b Flexible body 7 Straightening machine main body 7a Gold 7b Press part 7c Frame part 8a, 8b Motor 9 Spherical bearing 10 Cylinder

Claims (3)

In a shape steel hot press straightening machine that performs press straightening from the direction perpendicular to the horizontal direction of conveyance of the shape steel, the press straightening machine is separated into a press body and a fixed base of the press straightening machine, and the press body is used as a fixed base. On the other hand, a shaped steel hot press straightening machine provided so as to be operable in any direction on a horizontal plane. In a shape steel hot press straightening machine that performs press straightening from the direction orthogonal to the horizontal direction of conveyance of the shaped steel, the press straightening machine is separated into a press body and a fixed base of the press straightening machine, The shape steel hot press straightening machine according to claim 1, wherein the press body is provided so as to be operable in an arbitrary horizontal plane direction with respect to the fixed base. In a shape steel hot press straightening machine that performs press straightening from the direction orthogonal to the horizontal direction of the shape steel conveyance, the press straightening machine is separated into a press body and a fixing base of the press straightening machine, and the straightening machine body is 2. The shaped steel hot press straightening machine according to claim 1, wherein the straight steel hot press straightening machine is provided so as to be able to operate in any direction in a horizontal plane by being supported on a fixed base by an alling or a combined linear motion bearing.

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