JPS6277101A - Edging rolling device for shape material having flange - Google Patents

Abstract

PURPOSE:To improve dimensional accuracy and production efficiency by providing horizontal rolls having web restraining collars and shaft parts and disposing backup rolls and rolls for rolling down flanges which make rolling contact with the shaft parts thereof. CONSTITUTION:The web restraining collars 7-1 and the shaft parts 7-2 having a taper are provided to the split type horizontal rolls 7. The rolls 7 are rotated by driving shaft 8 and the collars 7-1 grasp and restrain the webs of a rolling material in a rolling process. The backup rolls 9 freely rotatably support work rolls 10 for rolling down the flanges and are displaced in the direction intersecting with the straight line connecting the axial centers of the rolls 7, 10. The rolls 10 are preliminarily driven by being brought into press contact with the shaft parts 7' of the rolls and further one end face thereof contacts with the side walls of the rolls 7. The web is thoroughly restrained by the above-mentioned method and therefore, the dimensional accuracy and production efficiency are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an edging rolling apparatus for section steel having flanges, and more specifically, for shaping and forging flanges of various dimensions for H section steel and similar section steel. This invention relates to an edging rolling machine used in the field of edging.

(Prior art) H-shaped steel and similar shaped steel are generally rolled using a universal rolling mill, but this method involves rolling a steel billet into a shape similar to H-shaped steel using a breakdown mill 1 in Fig. 6. After rough shaping into a shape, the universal rolling mill 2, which is equipped with upper and lower horizontal rolls 2' and left and right vertical rolls 2', is used to roll down the entire thickness of the silanib and flange.Furthermore, the width direction of the flange is rolled and forged to create variations in shape and size. Edging rolling t(f
The i3 roller is installed continuously with the universal rolling mill 2 as shown in FIG.

According to this rolling method, the thickness of the web and flange can be adjusted within a considerable range, and sizes with different cross-sectional properties can be rolled with the same roll.

The layout shown in FIG. 6 is the most typical example, and there may be cases in which a plurality of rolling mills 2 and edging mills 3 are arranged.

By the way, the rolling state of the edging rolling mill 3 is, as shown in FIG. 8, in the initial stage of production, in principle, the web portion 4 is restrained by a pair of upper and lower horizontal rows/I15, but as shown in FIG. In the latter pass, the width of one flange of the rolled material increases with repeated universal rolling, so a clearance S is forced to occur.

Based on the basic conditions of edge rolling, the current standards for H-beam steel are as follows: As shown in Table 1, in all nine domestic and foreign standards, the flange single width Fs in Figure 10 is constant within each designation series. The flange full width FT changes as the web thickness Tw changes. This contradicts the fact that, from a usage technical perspective, it is better for the total width of two blades to be constant within each designation series. be.

Furthermore, as shown in FIG. 9, since there is a clearance S in the latter pass, the position of the web 4 of the rolled material is accurately aligned with the flange 6.
The center position of FT/2 is not achieved, and the so-called center deviation (W
eb 0ff-center) f is likely to occur.

Attempts to create various flange width dimensions by common use of row/l/all date back to the beginning of the universal rolling method. As shown in FIG. 13, attempts have been made to prevent the buckling or center deviation De, and to prevent the buckling or center deviation De by using an auxiliary guide device G1 as shown in FIG. All of them have failed because it is difficult to maintain a stable and good rolling condition, and at present, dedicated Elanon rolls are used to manufacture each series.

(Problems to be Solved by the Invention) The purpose of the present invention is to advantageously eliminate the above-mentioned drawbacks, and to solve the problem without any modification of the roll tool.
An object of the present invention is to provide an elastong rolling device equipped with an adjusting device for the diameter of an edging roll that can steplessly adjust one side width of a flange on-line.

(Means for Solving the Problems) The present invention advantageously solves the above-mentioned problems, and the gist thereof is to provide a horizontal roll 7 having a web restraint collar 7-1 and a shaft portion 7-2, A pair of backup rolls 9 that rollably abut on the outer peripheral surface of the shaft portions 7 to 2, an operating roll 10 for rolling down the rolled material flange supported by the backup rolls 9, and the horizontal roll 7 and the operating roll for rolling down the flange. /L/10 This is an Elasong rolling machine for a profile containing a flange, which comprises means for displacing the backup roll 9 in a direction intersecting a straight line connecting the axes of the respective axes.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows the main parts of an example edging rolling machine for a profile having a flange according to the present invention.

In FIG. 1, 7 is a horizontal roll, which in this embodiment is of a split type.

The split horizontal roll 7 has its outer circumferential surface rollably in contact with the web of the rolled material during the rolling process.

Web restraint collar 7 that clamps and restrains the web of rolled material
-1 and a tapered shaft portion 7-2, and is rotated by a drive shaft 8.

In the figure, reference numeral 9 denotes backup rolls, and a pair of them rotatably support the flange lowering operation rolls 10.

The pair of backup rolls 9 are moved in a direction intersecting the straight line connecting the respective axes of the split horizontal roll 7 and the flange lowering actuating roll 10, that is, in this embodiment, arrow K
, K' are displaced (opened and closed).

Due to the displacement of the backup roll 9 in the directions of arrows K and K', the flange lowering operation roll 10 moves in the direction of arrow A.
Displaced in the direction.

Displacement of the puncture-up roll 9 in the directions of arrows K and K' is performed using a roll position adjustment mechanism (rolling down mechanism) using a conventional screw, hydraulic mechanism, etc., which is known per se.

Further, the operating roll 10 is pre-driven by being pressed against the drive roll shaft 7' via the backup roll 9 by a preload force, thereby ensuring smooth rolling of the material.

Further, one roll end surface of the actuating roll 10 is constructed so as to be in close contact with the side wall of the horizontal roll 7 as shown in the figure, so as to prevent any inconvenience in rolling down and shaping the flange tip.

(Example) Hereinafter, the present invention will be explained based on examples thereof.

In the embodiment shown in FIG. 1, the actuating roll 10 is at its maximum opening in the state shown in FIG. 2, and its smallest opening is in the state shown in FIG. 3.

Therefore, the variable amount of the overall flange width using this method is (Lrn
lLx−Lmln)×2.

For example, dB =200m* d2 =200ranr d3=
Assuming 400 ■, L = 556, L = 400, the range of change in flange width required to manufacture a general H-type inert size of 100 to 400 m is the range of change in flange width of 300 m +
It is fully possible to respond to

At this time, the diameter d4 of the horizontal roll is 1200yv'm.
becomes. All of the roll specifications do not cause any problem in the existing rolling equipment configuration, and can be handled by conventional roll manufacturing technology without any problems in terms of strength, durability, and processing. If it is necessary to further widen this adjustment range, the rolls may be constructed as shown in FIG.

In this case, if the above roll dimensions are adopted (Lmaw −
Lmiyu) x 2 = 4 'OO cooperative.

In Fig. 1, the initial 1? Since it is possible to completely restrain rolling the web through all the passes from the first to the second half, the dimensional accuracy of the center deviation, which is particularly problematic in hot-rolled H-beams, is improved.

(Effects of the Invention) According to the present invention, since the roll dimension of the portion corresponding to one width of the flange can be arbitrarily adjusted online, H-beam steel of any flange dimension can be rolled. There is no need for replacement work, which improves production efficiency. Roll tool costs can also be reduced.

Furthermore, since it is possible to consistently perform web restraint edging rolling from the initial pass to the final pass for a specific product, dimensional accuracy is improved.

Furthermore, the actuating rolls with backup rolls installed at four locations can each be adjusted individually, as shown in Figure 5 (at
e (Manufacturing horizontally or vertically asymmetrical H-section steel like BL is also easy by simply accumulating the asymmetric reduction for each base without changing any tools for flanging. becomes possible.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1(a) and 1(b) are overall configuration diagrams of the etching roll of the present invention, FIG. 2 is an explanatory diagram showing the maximum opening degree of the actuating roll in FIG. 1, and FIG. FIG. 3 is an explanatory diagram showing the minimum opening of the actuating roll in FIG. 1, FIG. 4 is a configuration diagram of a backup roll for increasing the maximum opening of the actuating roll in FIG. a) 9 bodies are the original F! Figure 7 shows the configuration of a universal mill and an etching mill. Fig. 8 is a conceptual diagram showing the state of edge rolling in the initial pass. Fig. 9 is a conceptual diagram showing the conventional state of edge rolling in the latter half/4' pass. 1t□1yang-■
- 11-inch breakdown mill, 2: Universal rolling mill, 3: Edging rolling mill, 4: Web, 5: Horizontal roll, 6: Flange, 7: Split horizontal roll, 8: Drive shaft, 9: Backup roll . 10: Operation roll for lowering the flange. 's: ω Mself also Figure 8, Figure 9, Figure 10, Figure 11 (α) (b) Figure 12 ((2') (b) (α) Figure 13

Claims (1)

[Claims] A horizontal roll (7) having a web restraint collar (7-1) and a shaft (7-2), and a pair of backup rolls (9) that rollably abut on the outer peripheral surface of the shaft (7-2). and an operating roll (10) for rolling the rolled material flange, which is supported by the backup roll (9), and the horizontal roll (
7) and a means for displacing a backup roll (9) in a direction intersecting a straight line connecting the axes of the flange-reducing operation rolls (10).