JPH04270012A - Straightening machine with width changeable roller - Google Patents

Abstract

PURPOSE:To adjust the width of the straightening roller on line by composing the width changeable leveler roller of plural sets of leveler rollers to use for straightening the shapes, and setting he corner dimension of the straightening roller of this leveler roller set to the different value individually by each set. CONSTITUTION:A width changeable leveler roller of the side changeable roll straightener for the shapes K is composed of the 1st leveler roller set 2A (one fixing side straightening roller 3a1 and two moving side straightening rollers 3b1, 3b1') and the 2nd leveler roller set 2B (one fixing side straightening roller 3a2, and one moving side straightening roller 3b2), the fixing sleeve 6 is attached to the main shaft, the moving sleeve 7 is attached to the fixing sleeve 6 with fitting in out side. The corner R dimension Rr1 of each straightening roller 3 of the roller set 2A is set based on the fillet part R dimension RH1 of the shapes K as the small web height h1, and the corner R dimension Rr2 of each straightening roller 3 of the roller set 2B is set based on the fillet part R dimension RH2 of the shaped steel K as the large web height h2.

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 that can adjust the width of a straightening roller on-line.

0002

2. Description of the Related Art As a conventional technology of a variable width roller straightening machine configured so that the width of a straightening roller can be adjusted on-line, there is a width roller straightening machine disclosed in Japanese Patent Application Laid-Open No. 2-284717.

[0003] As shown in FIG. 4, the above conventional technology includes a fixed correction roller 3a and a movable correction roller 3b as the correction roller 3, and the fixed correction roller 3a and the movable correction roller 3b form a pair of leveler rollers. 2, and a variable width leveler roller 1 made up of this one leveler roller pair 2 is attached to a main shaft 5.

[0004] The variable width leveler roller 1 is attached to the main shaft 5 supported on the straightening machine frame 4 by attaching the fixed side straightening roller 3a of the variable width leveler roller 1 to the main shaft 5 through a fixed sleeve 6 that is immovably fitted around the main shaft 5. The movable side correction roller 3b of the variable width leveler roller 1 is attached to the fixed sleeve 6 with the main shaft 5.
This is accomplished by attaching them to each other via a moving sleeve 7 which is fitted onto the outside and is slidably displaceable in the axial direction but not rotationally displaceable.

[0005] In this prior art, by moving the movable side correction roller 3b along the axial direction of the main shaft 5, the roller width can be changed and adjusted online, so that the web height due to the size change of the section steel K can be adjusted. It is not necessary to stop the line to change the roller width by rearranging or assembling the correction roller 3 every time the width changes, and the work of changing the roller width for workers is made much safer and easier. Since it is only necessary to provide a drive device for changing the roller width on the movable side correction roller side, this provides an excellent effect of reducing equipment costs.

[0006]

By the way, when applying bending deformation to the web K1 of a section steel K, for example, an H section steel, using a roller straightening machine to correct warped deformation of the H section steel,
It is desirable to bend the web K1 by pressing the circumferential surface of the straightening roller 3 of the roller straightening machine against a portion of the H-section steel web K1 as close to the flange K2 as possible.

For this reason, in the prior art, the radius of curvature of the corner between the end face facing the flange K2 of the straightening roller 3 and the circumferential surface, that is, the corner R dimension, is set to the smallest possible value. Flange K2 on the circumferential surface of 3
The web K can be pressed at one location near the web K.

However, as shown in FIG.
The curvature radius dimension of the fillet portion which is the connection portion between the web K1 and the flange K2, that is, the fillet portion R dimension RH
is formed to a larger value as the web height h of the section steel K increases, so the fillet portion R dimension R
When trying to straighten a section steel K with a large H, that is, a section steel K with a large web height h, the end face of the straightening roller 3 and the section steel K
There was a problem in that the distance between the flange K2 and the flange K2 became large, and the flange K2 was deformed (tilted deformation) during the correction operation.

Further, for the above-mentioned reasons, when assembling the straightening roller 3, the fillet portion R dimension R of the section steel K to be straightened is
In consideration of H, a straightening roller 3 having a corner R dimension that matches this fillet R dimension RH is selected and assembled. If the roller width is changed to a larger one, the web height h can be adjusted by adjusting the roller width, but the fillet R dimension RH cannot be changed, so the straightening roller 3 needs to be rearranged, and the width can be changed. There was a problem that the chance-free range of the roller straightening machine was narrow.

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

[0011]

[Means for Solving the Problems] The means of the present invention for solving the above-mentioned technical problems is a variable width roller straightening machine for sectioned steel having variable width leveler rollers, and the variable width leveler rollers are arranged in two or more pairs of leveler rollers. In addition, the corner R dimension of the correcting roller of the leveler roller pair is set to a different value for each pair.

[0012] In order to properly handle various types of steel sections with different web heights, it is preferable to set the corner R dimensions of the straightening rollers to different values for each pair of leveler rollers, with a difference within ±5 mm. .

[0013]

[Operation] For two or more pairs of leveler rollers that make up the variable width leveler roller, the corner R dimension of the straightening roller is set to a different value for each pair. Straightening of a section steel with a small corner R dimension is achieved by using a pair of leveler rollers with a small corner R dimension of the straightening roller. Achieved with a pair of large leveler rollers.

[0014] In this way, since the straightening of the shaped steel is achieved by the pair of leveler rollers each comprising a straightening roller having a corner R dimension that matches the fillet R dimension of the shaped steel,
By simply adjusting the roller width of this leveler roller pair to match the web height of the section steel, the straightening roller of the selected leveler roller pair can be adjusted around the periphery with its end surface in contact or almost in contact with the inner surface of the flange. This will cause the surface to properly press against the web location adjacent to the flange.

By the way, from many experimental results, it has been found that the corner R dimension of a straightening roller that can properly straighten a section steel having a certain fillet R dimension is
If the dimension is RH and the corner R dimension is Rr, then Rr=R
It was found that H±5 [mm].

Therefore, when using the variable width leveler roller, the corner R dimension of the correcting roller for each pair of leveler rollers is adjusted to ±5 m.
By setting different values sequentially with a difference within m, it is possible to properly correspond to a large number of different size types with different fillet R dimensions of section steel, and also to accommodate a wide range of shapes with different fillet R dimensions. A small number of leveler roller pairs can be used to accommodate different size types without any problems.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. A variable width roller straightening machine for shaped steel K is constructed by alternately arranging upper and lower variable width leveler rollers 1 in a staggered manner, but in the embodiment shown in FIG. The variable width leveler roller 1 is composed of a first pair of leveler rollers 2A and a second pair of leveler rollers 2B, that is, two pairs of leveler rollers 2.

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'. , one fixed side correction roller 3a2 and one moving side correction roller 3b2. The reason why two moving side correction rollers 3b are provided in the first leveler roller pair 2A is to reduce the amount of movement of the moving side correction rollers 3b in response to changes in the web height h of the section steel K to be corrected. Therefore, two or more moving side correction 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 the straightening machine frame 4 via a bearing, and a shaft 5 for externally assembling the fixed side straightening roller 3a to the main shaft 5 is attached to the main shaft 5 through a bearing. A fixed sleeve 6 is externally assembled using a key so that it cannot idle but can be removed in the axial direction, and the movable side correction roller 3b is externally assembled to the main shaft 5 to this fixed sleeve 6. A movable sleeve 7 is fitted onto the outside using a key so that it cannot freely rotate but is movable in the axial direction.

A support shaft 8 is attached to the shaft end of the main shaft 5 to which a moving means for moving the moving sleeve 7 in the axial direction is attached.
is screwed onto the support shaft 8, and a sleeve holding shaft 9 that holds the fixed sleeve 6 fixedly attached to the main shaft 5 in the axial direction is immovably assembled using a holding nut. .

A screw sleeve 12 having a thread carved on the outer circumferential surface is mounted on the sleeve holding shaft 9 so as to freely rotate through a bearing.
A sleeve shaft 13 that is rotationally driven by a motor 11 fixed to the frame 10 is fixed to one end of the sleeve shaft 2 .

A bearing box 17 is attached to the screw sleeve 12 via a moving nut 14 that is screwed onto the screw sleeve 12.
is connected to a support box 16 fixed to the frame 10 in a state where it is held in a state that it cannot be rotated by a rotation stopper 15, and can be displaced in the axial direction of the main shaft 5 using a key, although it cannot be rotated. has been done. That is, although the combination of the moving nut 14 and the bearing box 17 cannot be rotated relative to the frame 10 to which the support box 16 is fixed, it is assembled so that it can move in the axial direction. When the screw sleeve 12 rotates due to the operation of the screw sleeve 1 of the moving nut 14,
2, it moves in the axial direction of the main shaft 5.

The moving sleeve 7 is connected to the bearing box 17 via a thrust bearing 18, and the movement of the bearing box 17 in the axial direction is performed directly by the moving sleeve 7.
, that is, movement along the axial direction of the moving side correction roller 3b. The bearing box 17 also includes a frame 1.
One end of a movement amount detector 19 fixed at zero is connected, and this movement amount detector 19 detects the movement amount of the bearing box 17, that is, the movement amount of the moving side correction roller 3b.

As shown in FIG. 2, the variable width leveler roller 1
Each correction roller 3 of the first leveler roller pair 2A that constitutes the
The corner R dimension Rr1 is the fillet R dimension RH1 of the section steel K whose web height h is small.
and the second leveler roller pair 2B
The corner R dimension Rr2 of each straightening roller 3 is set based on the fillet R dimension RH2 of the section steel K whose web height h is larger than the web height h2.

For example, the corner R dimension Rr1 of the correction roller 3 of the first leveler roller pair 2A is set to 15 [mm], and the corner R dimension Rr2 of the correction roller 3 of the second leveler roller pair 2B is set to 20 [mm]. By setting the first leveler roller pair 2A, the fillet portion R dimension RH1 corresponds to the shape steel K with a small web height h of 10 to 20 [mm], and the second leveler roller pair 2B corresponds to the fillet portion R dimension RH1. It becomes possible to correspond to a section steel K having a large web height h with RH2 of 15 to 25 [mm].

[0026] Fillet portion R dimension RH is 12 [mm],
For Super High Slend (product name), which is our H-beam steel product, which has three sizes of 15 [mm] and 18 [mm], the first leveler roller pair 2A straightening roller 3
When performing a straightening operation by setting the corner R dimension Rr1 of 13.5 [mm] and the corner R dimension Rr2 of the correction roller of the second leveler roller pair 2B to 16.5 [mm], We were able to obtain extremely high-performance corrective action.

[0027]

[Effects of the Invention] Since the present invention has the above-mentioned configuration, it produces the following effects. Since a straightening roller having a corner R dimension that matches the fillet R dimension of the section steel is selected and used, the section steel can be straightened with extremely high precision.

[0028] Since two or more sets of straightening rollers having corner R dimensions suitable for each dimension range of the fillet portion R dimension of the section steel are provided, the dimensional range of the section steel that can be corrected with high accuracy is sufficiently expanded. can do.

[0029] Since the selection of the straightening roller having the corner R dimension that matches the fillet R dimension of the shaped steel is achieved online, the straightening work of the shaped steel can be accomplished with high work efficiency.

[0030]

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the main parts of an embodiment of the device of the present invention.

FIG. 2 is an enlarged explanatory diagram of a variable width leveler roller used in the embodiment shown in FIG. 1;

FIG. 3 is a front view showing dimensions of an H-section steel as a section steel.

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

[0031]

[Explanation of symbols]

1; Width variable leveler roller arrangement 2; Leveler roller pair 2A; First leveler roller pair 2B; Second leveler roller pair 3; Correction roller
3a; Fixed side correction roller 3b; Moving side correction roller 4;
Straightening machine frame 5; main shaft
6 ; Fixed sleeve 7 ; Moving sleeve
8; Support axis 9;
Sleeve holding shaft 10; Frame 11; Motor
12; Screw sleeve 13; Sleeve shaft 14; Moving nut 15; Rotation stopper
16; Support box 17; Bearing box
18; Thrust bearing 19; Travel amount detector Rr
；Corner R dimension K ；Shaped steel
K1; Web K2; Flange
RH; fillet R dimension h; web height

Claims (3)

[Claims] 1. A variable width roller straightening machine for shaped steel (K) having a variable width leveler roller (1), in which the variable width leveler roller (1) is connected to two or more pairs of leveler rollers (
2) A variable width roller straightening machine comprising: a corner radius dimension (Rr) of the straightening roller (3) of the leveler roller pair (2) is set to a different value for each pair. [Claim 2] The corner R dimension (Rr) of the straightening roller (3) is set to ±5 mm for each pair of leveler rollers (2).
2. The variable width roller straightening machine according to claim 1, wherein the width is set to different values in order with a difference within a range of less than or equal to. 3. The leveler roller pair (2) is composed of one fixed side correction roller (3a) and a plurality of moving side correction rollers (3a).
The variable width roller straightening machine according to claim 1 or 2, comprising: (b).