JPH0523726A - Rolling equipment for shapes - Google Patents

Abstract

PURPOSE:To prevent cambers from being generated at the tip and the heel of a stock to be rolled by stabilizing a guidance at a short distance from the outlet side of a universal rolling mill. CONSTITUTION:In a rolling equipment composed of the universal rolling mill 1 provided with a pair of horizontal rolls 1a, 1b and a pair of vertical rolls 1c, 1d, a roller guide 2a having an hourglass-shaped roll barrel guiding the outer end face of the flange of the material to be rolled and an edging mill 2 which is provided with a width-variable guide 2b along the inside of the flange of this stock to be rolled and arranged on the outlet side of the universal rolling mill, a pair of vertical web guides 3a, 3b linking to the vertical movement of the horizontal rolls 1a, 1b are arranged at a short distance from the outlet side of this universal rolling mill 1.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling apparatus suitable for rolling shaped steel such as H-shape, and particularly to improve guideability of a material to be rolled. To do. As a device suitable for rolling shaped steel, a variable guide for guiding the inner surface of the flange of the material to be rolled is arranged between the universal rolling mill and the edger rolling mill. There is known one disclosed in Japanese Patent Laid-Open No. 3-5012, which has a mechanism in which a guide roller of a single lifting type is arranged on a lever, and according to this device, from a guide roll to an edger rolling machine. The rolled material was guided very well, and the vertical warp during that time could be made extremely small. By the way, even if the above-mentioned technique is applied, it has not been possible to suppress the warpage of the material to be rolled, especially at the front end and the rear end. Since damage such as roll damage due to non-bite on the rolling mill becomes great, development of a solution to the problem has been desired. The reason why it is not possible to prevent warpage at the front and rear edges of the rolled material is that the warpage in such an area especially occurs in the immediate vicinity of the universal rolling mill and it is necessary to guide and guide the material to be rolled in that area. Due to the above restrictions, it was not possible to place guides in that area (the distance from the universal rolling mill to the edging rolling mill was approximately 1890).
mm). In the device disclosed in the above publication, an attempt was made to guide and guide the scraper from the universal rolling mill to the guide roller, but in the scraper, depending on the funnel width of the material to be rolled, the web was used. There was a problem that the prevention of warpage could not be expected due to the large gap. SUMMARY OF THE INVENTION In a device that is a combination of a universal rolling mill and an edger rolling mill, it is possible to reliably guide and guide the material to be rolled, and especially to suppress the warp at the front and rear ends. This is the purpose of this invention. As a guide system for preventing the shape steel from warping, there is known a method of simultaneously guiding the flange end surface and the web. However, the universal mill has a structure that combines vertical rolls that roll down the flange of the material to be rolled in the thickness direction and horizontal rolls that roll down the web of the material to be rolled in the thickness direction. Since the roller or plate-shaped guide for guiding the outer end is restricted in the installation position, it is very difficult to dispose the roller or plate-shaped guide even near the exit side of the rolling mill. In this respect, the method of constraining and guiding only the web of the material to be rolled is relatively less restrictive than the method of guiding the flange end surface. Therefore, in the present invention, the method of guiding the web is adopted. That is, the present invention provides a universal rolling machine having a pair of horizontal rolls and a pair of vertical rolls, a roller guide having a drum-shaped roll cylinder for guiding the flange outer end surface of the material to be rolled, and the material to be rolled. In a rolling mill to be combined with an edging rolling mill which is provided on the exit side of the universal rolling mill and has a variable width guide along the inner surface of the flange of
This is a shaped steel rolling apparatus in which a pair of upper and lower web guides that are driven by vertical movements of horizontal rolls are arranged in the vicinity of the exit side of the universal rolling mill. Now, FIG. 1 shows the structure of the rolling apparatus according to the present invention, and FIGS. 2 and 3 show the essential parts thereof. Number 1 in the drawings is a horizontal roll pair 1a, 1b and a vertical roll pair 1c, 1d is a universal rolling mill, 2 is an edging rolling mill arranged on the outlet side of the universal rolling mill 1, and this edging rolling mill 2 is a drum shape that guides the outer end surface of the flange h ₁ of the material h to be rolled. A roller guide 2a having a roll cylinder and a variable width penetrating guide 2b along the inner surface of the flange of the material h to be rolled (the operating procedure of the variable width penetrating guide in this edger rolling mill is disclosed in JP-A-63-3
Reference is made to 0364. ). Further, 3a and 3b are the webs h _{2 of the} material h to be rolled in the vicinity of the exit side of the universal rolling mill 1.
Is a pair of web guides sandwiching the upper and lower sides, and these web guides 3a and 3b are roll chocks C ₁ and C ₂ of the horizontal roll pairs 1a and 1b of the universal rolling mill.
Each of the horizontal rolls 1 is fixedly held via a connecting pin P on a guide frame f that is fixed by screwing and is connected to the horizontal roll 1.
It can be moved up and down according to the movement of a and 1b. When the scratches due to the contact with the rolled material h ₂ pose a problem, the web guides 3a, 3b are provided with a roller r rolling in contact with the web h ₂ and the flange h ₁ of the rolled material h. It can also be arranged. Further, the web guides 3a and 3b may be integrated in the upper and lower sides, respectively. However, in order to realize a highly accurate guide even if the size of the material to be rolled fluctuates, as shown in FIG. It is also possible to adopt a division type in which the vertical rolls can be moved individually. The above web guides 3a and 3b can be applied independently to the entrance side of the universal rolling mill 1. The vertical warp at the front and rear ends, which may cause a so-called center deviation in which the position of the web of shaped steel deviates from the center in the width direction of the flange to either one, is large when it is large. In addition, since the damage such as the hitting and damage to the equipment and the damage of the roll due to the non-biting of the rolling mill will be serious, it is the greatest point to prevent the warpage in this area. As a method of preventing warpage of the rolled material, it is effective to strengthen and restrain the guide of the rolled material in the immediate vicinity of the occurrence of warpage, and the guide in that area does not need to be very strong. Therefore, a compact structure can be taken in terms of equipment. For this reason, in the present invention, in the rolling apparatus in which the universal rolling mill and the edger rolling mill are combined, the web guides 3a and 3b are attached particularly near the exit side of the universal rolling mill.
In this area, the guide of the rolled material is strengthened. In the present invention, the web guides 3a,
Since 3b moves in accordance with the vertical movement of the horizontal rolls 1a and 1b, a large gap is not formed between the guide and the rolled material, and the rolled material can be guided accurately. Since the web guide itself is very compact, it can be easily adapted to existing equipment. Further, according to the present invention, the APC (Automatic Po
sition Control) is possible. Since the horizontal rolls 1a and 1b of the universal rolling mill 1 are vertically moved up and down according to the web thickness of the material to be rolled, the installation positions of the web guides 3a and 3b are set to the rolling rolls 1a and 1b. It needs to be placed in a place where it does not interfere with the web thickness before the pass, and the gap between the web guide and the material to be rolled will be opened about 1/2 of the maximum reduction amount, which is usually about 5 mm. From the viewpoint of restraining warpage and preventing warpage, the intended purpose of the present invention is sufficiently achieved. As described above, according to the present invention, it is possible to effectively suppress the vertical warp which has occurred at the front and rear ends of the material to be rolled. In addition, since it is possible to reliably guide even when rolling webs with different web thickness for each pass, it is possible to stably manufacture shaped steel products with high accuracy without occurrence of center deviation etc. Accidents such as bumping due to warpage of the material can be completely avoided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural explanatory view of a rolling device according to the present invention. FIG. 2 is a diagram showing a main part of an apparatus according to the present invention. FIG. 3 is a diagram showing a main part of an apparatus according to the present invention. [Explanation of reference numerals] 1 universal rolling mill 1a horizontal roll 1b horizontal roll 2 edging rolling mill 2a roller guide 2b penetration guide 3a web guide 3b web guide h rolled material h ₁ flange h ₂ web C ₁ roll chock C ₂ roll chock f guide frame P Connection pin r Roller

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Jun Hatanaka             1-chome, Kawashima-dori, Mizushima, Kurashiki-shi, Okayama             Shi) Inside Mizushima Works, Kawasaki Steel Co., Ltd. (72) Inventor Yoshihiko Doi             1-chome, Kawashima-dori, Mizushima, Kurashiki-shi, Okayama             Shi) Inside Mizushima Works, Kawasaki Steel Co., Ltd.

Claims (1)

Claim: What is claimed is: 1. A universal rolling mill having a pair of horizontal rolls and a pair of vertical rolls, a roller guide having a drum-shaped roll cylinder for guiding the flange outer end face of the material to be rolled, and the material to be rolled. In a rolling mill that has a variable width guide along the inner surface of the flange of the material and is combined with an edging rolling mill that is arranged on the exit side of the universal rolling mill, in the immediate vicinity of the exit side of the universal rolling mill, the vertical movement of each horizontal roll An apparatus for rolling a shaped steel, characterized in that a pair of upper and lower web guides that are swung up and down are arranged.