JPH07106388B2 - Variable width roller straightener - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable width roller straightening machine capable of adjusting the roller width of a straightening roller online.

[0002]

2. Description of the Related Art As a prior art of a variable width roller straightening machine constructed so that the roller width of a straightening roller can be adjusted online, there is a width roller straightening machine disclosed in Japanese Patent Laid-Open No. 2-284717.

As shown in FIG. 4, in the above-mentioned prior art, a fixed side correction roller 3a and a moving side correction roller are used as the correction roller 3.
3b is provided, the fixed side correction roller 3a and the moving side correction roller 3b constitute a leveler roller pair 2, and the variable width leveler roller 1 constituted by this one leveler roller pair 2 is attached to the main shaft 5. .

The variable width leveler roller 1 is attached to the main shaft 5 supported by the straightening machine frame 4 through the fixed sleeve 6 fixedly fitted on the fixed side straightening roller 3a of the variable width leveler roller 1, and Variable width leveler roller 1
The moving side straightening roller 3b is mounted on the fixed sleeve 6 via a moving sleeve 7 which is slidably displaced in the axial direction of the main shaft 5 but is fitted onto the fixed sleeve 6 so as not to be rotationally displaced.

In this prior art, the width of the roller can be changed and adjusted online by moving the moving side straightening roller 3b along the axial direction of the main shaft 5, so that the shape steel K
It is not necessary to stop the line to change the roller width by changing or assembling the straightening roller 3 each time the height h of the web changes due to the change in the dimension, and the work of changing the roller width by the operator is significantly safer. In addition, since the driving device for changing the roller width needs to be provided only on the moving side correction roller side, it is possible to achieve the excellent effect that the facility cost can be reduced. .

[0006]

By the way, when a bending deformation is applied to a web K1 of a shaped steel K, for example, an H-shaped steel by a roller straightening machine to correct the warp deformation of the H-shaped steel, the roller straightening machine is used. The outer surface of the straightening roller 3 of the
The web by pressing it as close to the flange K2 as possible.
It is desirable to give K1 a bend.

Therefore, in the prior art, the straightening roller 3 is provided with a radius of curvature, that is, a corner R dimension, of a corner portion between the end surface and the peripheral surface of the straightening roller 3 facing the flange K2. The peripheral surface of No. 3 can be pressed against the web K1 near the flange K2.

However, as shown in FIG.
The radius of curvature dimension of the fillet portion, which is the connection portion between the web K1 and the flange K2, that is, the fillet R dimension RH, is formed to a larger value as the web height h of the shaped steel K increases. When a shaped steel K having a large fillet R dimension RH, that is, a shaped steel K having a large web height h, is attempted to be straightened, the distance between the end surface of the straightening roller 3 and the flange K2 of the shaped steel K becomes large, and the straightening operation is performed. Flange inside
There was a problem of causing deformation of K2 (slope deformation).

For the above reason, the fillet R dimension RH of the shaped steel K is straightened when the straightening roller 3 is assembled.
In consideration of the above, the straightening roller 3 having a corner R dimension suitable for the fillet R dimension RH is selected and assembled, but the shaped steel K to be straightened is large from the small web height h. If it is changed to one, it can cope with the change of the web height h by adjusting the roller width,
Since the change of the fillet R dimension RH cannot be dealt with, it is necessary to change the straightening roller 3, and there is a problem that the chance-free range of the variable width roller straightening machine is narrow.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and it is a technical problem to make the assembled straightening roller appropriately correspond to the change of the dimension R of the fillet portion of the shaped steel. Therefore, it is an object of the present invention to achieve highly accurate straightening of shaped steel and to expand the chance-free range of the variable width roller straightening machine.

[0011]

Means for Solving the Problems The means of the present invention for solving the above technical problems is a variable width roller straightening machine of shaped steel having a variable width leveler roller, and the variable width leveler roller is composed of two or more pairs of leveler rollers. The configuration is to set the corner R dimension of the straightening roller of the pair of leveler rollers to a different value for each set.

In order to properly cope with various shaped steels having different web heights without leakage, it is preferable to set the corner radius R of the straightening roller to a different value within a range of ± 5 mm for each leveler roller pair. .

[0013]

In two or more sets of leveler rollers forming a variable width leveler roller, the corner R dimension of the straightening roller is set to a different value for each set, so that the shaped steel having a small web height h, that is, the fillet R dimension. Can be achieved with a pair of leveler rollers having a small corner radius R of the straightening roller, and straightening of a profile steel having a large web height h, that is, a steel strip having a large fillet R dimension can be performed by straightening the corner radius R of the straightening roller. Achieve with a large leveler roller pair.

Thus, since the straightening of the shaped steel is achieved by the pair of leveler rollers composed of the straightening rollers having the corner R dimension matching the fillet R dimension of the shaped steel,
By simply adjusting the width of the pair of leveler rollers to match the height of the web of shaped steel, the straightening roller of the selected pair of leveler rollers will rotate with the end surface in contact with or almost in contact with the inner surface of the flange. The surface is properly pressed against the web near the flange.

By the way, from many experimental results, the corner R dimension of a straightening roller capable of properly straightening a shaped steel having a constant fillet R dimension is the fillet R.
When the dimension is RH and the corner R dimension is Rr, Rr = RH ± 5
It was found to be [mm].

Therefore, for the width variable leveler rollers, the corner R dimension of the straightening roller is ± 5 mm for each leveler roller pair.
By setting different values in order within the difference within the range, it is possible to properly cope with a large number of different size types of the fillet section R of the shaped steel without omission.
A wide variety of different sizes can be handled with a small number of pairs of leveler rollers without any trouble.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The variable width roller straightener for the shaped steel K is configured by alternately arranging the upper and lower variable width leveler rollers 1 in a zigzag manner. In the embodiment shown in FIG. 1, the lower variable width leveler roller 1 is used. This variable width leveler roller 1 comprises a first leveler roller pair 2A and a second leveler roller pair 2B, that is, two leveler roller pairs 2
It consists of

As shown in FIG. 2, the first leveler roller pair 2A is composed of one fixed side correction roller 3a1 and two moving side correction rollers 3b1 and 3b1 ', and the second leveler roller pair 2B is , One fixed side straightening roller 3a2 and one moving side straightening roller 3b2. In the first pair of leveler rollers 2A, two moving side straightening rollers 3b are provided in order to reduce the moving amount of the moving side straightening roller 3b corresponding to the change in the web height h dimension of the shaped steel K to be straightened. Therefore, two or more moving side straightening rollers 3b are not used at the same time.

A main shaft 5 for rotationally driving the variable width leveler roller 1 is attached to a straightening machine frame 4 via a bearing. The main shaft 5 is provided with a fixed side straightening roller 3a for externally assembling the main shaft 5. The fixed sleeve 6 is externally fitted to the main shaft 5 such that the fixed sleeve 6 can be slipped out in the axial direction though it cannot be idled by using a key, and the movable correction roller 3b is externally mounted to the main shaft 5. A moving sleeve 7 for use is externally fitted and mounted so as to be axially movable, though it cannot be idled by using a key.

At the shaft end of the main shaft 5, a support shaft 8 for mounting a moving means for moving the moving sleeve 7 in the axial direction.
A sleeve pressing shaft 9 that holds the assembly of the fixed sleeve 6 with respect to the main shaft 5 immovably in the axial direction is immovably assembled to the support shaft 8 using a press nut. .

A screw sleeve 12 having a thread engraved on its outer peripheral surface is externally mounted on the sleeve pressing shaft 9 via a bearing so as to be free to rotate. One end of the screw sleeve 12 is a motor fixed to a frame 10. A sleeve shaft 13 driven to rotate by 11 is fixed.

A bearing box 17 is attached to the screw sleeve 12 via a moving nut 14 screwed onto the screw sleeve 12, and the bearing box 17 is held by a rotation stopper 15 so as not to be rotationally displaced. Frame 10
The support box 16 fixed to the main shaft 5 is connected to the support box 16 fixed to the main shaft 5 so as to be displaceable in the axial direction of the main shaft 5, though it cannot be rotationally displaced. That is, the combination of the moving nut 14 and the bearing box 17 is not rotatably displaced with respect to the frame 10 to which the support box 16 is fixed, but is assembled so as to be movable in the axial direction. When the screw sleeve 12 is rotated by the operation of, the screw nut 12 for moving is screwed into the screw sleeve 12 to move in the axial direction of the main shaft 5.

The bearing box 17 includes thrust bearings.
The moving sleeve 7 is connected via 18 to the bearing box.
The movement of 17 in the axial direction is the movement of the moving sleeve 7 as it is, that is, the movement of the moving-side correction roller 3b along the axial direction. Further, one end of a movement amount detector 19 fixed to the frame 10 is connected to the bearing box 17, and by this movement amount detector 19, the movement amount of the bearing box 17, that is, the movement of the moving side correction roller 3b. The amount is detected.

As shown in FIG. 2, the variable width leveler roller 1 is used.
The corner R dimension Rr1 of each straightening roller 3 of the first pair of leveler rollers 2A constituting the above is set on the basis of the fillet R dimension RH1 of the shaped steel K having the web height h1 of which the web height h is small, and The corner R dimension Rr2 of each straightening roller 3 of the second leveler roller pair 2B is set on the basis of the fillet R dimension RH2 of the shaped steel K having the web height h2 in which the web height h is large.

For example, the corner R dimension Rr1 of the straightening roller 3 of the first leveler roller pair 2A is set to 15 [mm], and the corner R dimension Rr2 of the straightening roller 3 of the second leveler roller pair 2B is set to 20 [mm]. By setting to
Leveler RH1 of the fillet part is 10 with the leveler roller pair 2A of
Corresponding to shaped steel K with a small web height h of 20 [mm], the fillet R dimension RH2 is 15 with the second pair of leveler rollers 2B.
It is possible to deal with shaped steel K having a large web height h of up to 25 [mm].

The fillet R dimension RH is 12 [mm], 15
The corner radius Rr1 of the straightening roller 3 of the first leveler roller pair 2A is set to 13 for the Super High Slend (brand name), which is our H-shaped steel product with three size types of [mm] and 18 [mm]. And the corner radius Rr2 of the straightening roller of the second leveler roller pair 2B is 16.5 mm.
When setting it to [mm] and performing the correction operation,
It was possible to obtain an extremely high-performance straightening motion.

[0027]

Since the present invention has the above-mentioned structure, it has the following effects. Since the straightening roller having the corner R dimension which matches the fillet R dimension of the shaped steel is selectively used, straightening of the shaped steel can be achieved with extremely high accuracy.

For each size range of the fillet R dimension of the shaped steel, two or more sets of straightening rollers having a corner R dimension adapted to this size range are provided, so that the dimension range of the shaped steel that can be straightened with high accuracy is sufficiently expanded. can do.

Since the selection of the straightening roller having the corner R dimension matching the fillet R dimension of the shaped steel is achieved online, the straightening operation of the shaped steel can be achieved with high work efficiency.

[0030]

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of the device of the present invention.

FIG. 2 is an enlarged explanatory view of a variable width leveler roller used in the embodiment shown in FIG.

FIG. 3 is a front view showing an H-shaped steel as a shaped steel by size.

FIG. 4 is a partial vertical sectional view showing the configuration of a conventional example.

[0031]

[Explanation of symbols]

1; variable width leveler roller arrangement 2; leveler roller pair 2A; first leveler roller pair 2B; second leveler roller pair 3; straightening roller 3a; fixed side straightening roller 3b; moving side straightening roller 4; straightening machine frame 5; main spindle 6; Fixed sleeve 7; Moving sleeve 8; Support shaft 9; Sleeve holding shaft 10; Frame 11; Motor 12; Screw sleeve 13; Sleeve shaft 14; Moving nut 15; Rotation stop 16; Support box 17; Bearing box 18; Thrust bearing 19; Moving amount detector Rr; Corner R dimension K; Shape steel K1; Web K2; Flange RH; Fillet part R dimension h; Web height

Claims (3)

[Claims] 1. Shaped steel with variable width leveler roller (1)
In the variable width roller straightener of (K), the variable width leveler roller (1) is composed of two or more pairs of leveler rollers (2),
A variable width roller straightening machine in which the corner R dimension (Rr) of the straightening roller (3) of the leveler roller pair (2) is set to a different value for each set. 2. The corner radius dimension (Rr) of the straightening roller (3)
The variable width roller straightening machine according to claim 1, wherein each pair of leveler rollers (2) is set to a different value in order with a difference within ± 5 mm. 3. The variable width roller straightening machine according to claim 1, wherein the pair of leveler rollers (2) comprises one fixed side straightening roller (3a) and a plurality of moving side straightening rollers (3b).