JPH04228216A - Web guide device for h-shape steel - Google Patents

Abstract

PURPOSE:To enable production without changing web guides, even when the size of a product is changed, by making the width of a bi-sected pair of web guides adjustable and movable vertically. CONSTITUTION:The pair of bi-sected. lower web guides 3A is fixed on a L- shaped supporting bases 4, 4'. By a hydraulic motor 10, 10' for opening and closing, jack screws 9, 9' are activated to adjust a space in the width direction. The adjustment of a position in the hight direction is performed by a hydraulic motor 11 for elevating and lowering. When the pair of upper web guides 2A is set symmetrically to a bus line, the automation of the adjustment in the width and hight of the pairs of the web guides on the line is feasible. According to this scheme, there is no need for changing the guides for each series of products and since time for aligning adjustment is greatly saved, size-free rolling is attained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web guide for H-section steel.

0002

[Prior Art] Normally, when H-beam steel is rolled in a universal mill, the rolled material is guided correctly to the rolls, and
A guide device is used to minimize the deviation of the web center and the difference in the length of the upper and lower flange legs. This guide device includes a flange guide device for vertical rolls and a web guide device for horizontal rolls. In most vertical roll flange guide devices, the outer surface of the flange is guided by a cover plate of a chock (Japanese Patent Application Laid-Open No. 2-21190).
On the other hand, as shown in Fig. 2, the horizontal roll web guide device is composed of a pair of upper and lower web guides 2 and 3 that sandwich and guide the web surface 1w of the H-section steel 1 from above and below. Common.

0003

[Problem to be Solved by the Invention] However, in the conventional web guide device as described above, the web width is fixed, so it is necessary to replace it each time the size of the H-beam to be rolled is changed, which is time-consuming. In addition, there were problems such as increased costs because it was necessary to stock each size.

[0004] Therefore, the present applicant has already applied for the
No. 1-67907 proposes a variable width web guide that uses a web guide divided into two in the width direction and adjusts the left and right positions according to the roll width using screws with opposite threads on the left and right sides. However, the width adjustment amount of this variable width web guide is limited due to physical space constraints, so the guide has to be replaced for each product series, and it takes time to adjust the center alignment with the rolling roll. There are drawbacks such as the need for The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a web guide device for H-beam steel that can realize size-free rolling.

[0005]

[Means for Solving the Problems] The present invention is a web guide device comprising a pair of upper and lower web guides whose width is variable and which is used in a finishing universal mill for rolling H-section steel, and which supports the pair of web guides. a movable base that guides the support base by a guide shaft fixed on an elevating frame, a guide width adjustment device that individually adjusts the interval between the movable bases, and a guide that allows the elevating frame to move up and down. This is a web guide device for H-beam steel characterized by comprising a height adjustment device.

[0006]

[Function] According to the present invention, the width of the two-divided pair of web guides can be adjusted individually and they can be raised and lowered, so even if the size of the H-shaped steel is changed, the pass line will not change again. Rolling can be carried out without replacing the web guide.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, embodiments of the present invention will be described in detail, focusing mainly on the lower web guide device. As shown in FIG. 1, a lower web guide pair 3A divided into two parts is fixed to L-shaped support stands 4 and 4', respectively.
' is a moving platform 8,8 guided by a guide shaft 7 whose both ends are fixed by bearings 6,6' fixed on the elevating frame 5.
It is placed and fixed on the top of '. Further, one ends of screw jacks 9, 9' are rotatably fixed to the supports 4, 4', respectively, and these screw jacks 9, 9' are connected to the opening/closing hydraulic motor 10.
, 10', they can be freely moved toward and away from each other in the direction of arrow L. Moreover, the elevating frame 5 includes an elevating hydraulic motor 11 and a connecting shaft 12.
It is supported by screw jacks 13 and 13' which are movable up and down in synchronization with the direction of arrow H. The lifting hydraulic motor 11 and screw jacks 13, 13' are fixed to a mill housing (not shown).

By configuring the lower web guide device in this manner, the spacing in the width direction can be adjusted by operating the opening/closing hydraulic motors 10, 10', and the interval in the width direction can be adjusted by operating the lifting hydraulic motor 11. The height position is adjusted. Regarding the upper web guide device, if the lower web guide device explained above is configured and arranged symmetrically upward with respect to the pass line, widthwise and heightwise adjustments can be made in the same way. It can be performed.

Furthermore, if each screw jack and hydraulic motor are configured to be remotely controllable, it is possible to fully automate the width and height adjustments of the pair of web guides on-line. Furthermore, if the pair of upper and lower web guide devices configured in this way is attached to a finishing universal mill equipped with variable width rolling rolls as described in Japanese Patent Application Laid-Open No. 1-317607, which has already been filed by the present applicant, It is possible to realize size-free rolling of H-beam steel with constant outer diameter.

0010

[Effects of the Invention] As explained above, according to the present invention, two
Since it is possible to provide a web guide device in which the width of the divided web guide pairs can be adjusted individually and can be raised and lowered up and down, it is possible to improve the dimensional accuracy of the product, which greatly improves product quality. Contribute.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional example of a web guide device.

[Explanation of symbols]

1 H-beam steel 2A Upper web guide pair 3A Lower web guide pair 4 Support stand 5 Lifting platform 6,15 Bearing 7 Guide shaft 8　Moving platform

Claims (1)

[Claims] 1. A web guide device comprising a pair of upper and lower web guides with variable width and used in a finishing universal mill for rolling H-shaped steel, comprising: a support base for supporting the pair of web guides; and a support base for supporting the pair of web guides; a moving table guided by a guide shaft fixed on the lifting frame; a guide width adjustment device that individually adjusts the distance between the moving tables;
A web guide device for H-beam steel, comprising a guide height adjustment device that allows the elevating frame to move up and down.