JPH0446616A - Device for manufacturing shaped material - Google Patents

Abstract

PURPOSE:To freely and distinctively manufacture many size of the shaped products with economy, effect and well dimension accuracy by making the stand interval changable corresponding to the interval of the roll on the roll stands in cantilever arranged in opposite positions with interposing the pass-line of the material to be shaped. CONSTITUTION:A pair of overhang roll stands 1A, 1B providing the roll 20A-20D are set in mutually opposite, a pair of the upper side stand interval adjusting devices 11A, 11B are set at its upper side and the lower side stand interval adjusting device 6 is set at the lower side. Therefore, the interval of stands is changed corresponding to the interval of rolls. Further, by reciprocating the shift frame 3A, 3B with the shift cylinder 4A on the sole plate 2, the above roll stands 1A, 1B are shifted to the position without interfering with the material to be rolled except the passing time of the required material to be rolled.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is a method for freely producing various sizes of shaped products having flanges, that is, H-shaped, groove-shaped, and similar shaped products through a rolling process. The present invention relates to a shape manufacturing device that can produce a shape.

[Conventional technology]

Conventionally, as a rolling method for producing shapes having such flanges into various sizes, Japanese Patent Application Laid-Open Nos. 59-202101, 62-282706, and 633.
It is disclosed in Publication No. 0102.

Further, as one of the rolling apparatuses for realizing this rolling method, there is one disclosed in Japanese Patent Application Laid-Open No. 172605/1983.

This device is usually called a skinny rolling mill, and as shown in FIG. 4, it consists of a pair of stands 30 and rolls 31 supported by the stands 30. It is equipped with a shift frame 32 that can carry a stand 30 and move in a direction perpendicular to the pass line, a sole plate 33 on which this shift frame 32 is mounted, and the shift frame 32 is held by a shift frame clamp device 34, It has a structure in which a stand interval adjustment device 35 for adjusting the interval between the rolls 31 is connected to the shift frame 32, and a device (not shown) moves the roll axis to the pass line by rotating the stand on the shift frame and raising and lowering it by snow-making. It is characterized in that it can be moved obliquely with respect to a surface, and the arrangement angle of the oblique roller can be made freely.

However, while conventional skew rolling mills have the advantage of efficiently producing various sizes of H-section steel or sections having flanges such as channel shapes and sheet piles into various sizes, they also have the following problems to be solved.

(1) When manufacturing H-beams of various sizes with different web heights, the mill rigidity in the thrust direction of the diagonal rolls must be must be secured.

That is, with reference to FIG. 4, stand 30 tilts with section A as a fulcrum in response to a load in the thrust direction of roll 31. Therefore, in order to ensure the mill rigidity (displacement) of the roll 31 in the thrust direction, the stand 30. Shift frame 32. It is necessary to make the sole plate 33, the shift frame clamp device 34, the stand interval adjustment device 35, etc. highly rigid and robust, which has the drawback of leading to a significant increase in cost.

(2) Rolling equipment that can freely and efficiently produce sections with flanges and similar section products into various sizes in a rolling process is an intermediate rolling mill, for example, a skew rolling mill adjacent to the mill. Some are equipped with at least one reverse rolling mill.

In this case, if the rolls of the intermediate rolling mill are on the pass line, the profile will interfere with the rolls of the intermediate rolling mill during rolling in the reverse rolling mill. The rolls of the intermediate rolling mill must be positioned so that they do not interfere with the shapes.

As an example of a solution, in the case of a method of retracting the rolls in the vertical direction by providing a roll rolling down mechanism, taking an H section steel as an example, as shown in Fig. 5, The roll must be evacuated by a distance equal to at least 1/1/11.

In addition, in the figure, S, i! Showing the H-beam before widening, S2
shows the H-beam after widening.

Therefore, the required stroke of the roll lowering device becomes longer and the mill stiffness in the radial direction decreases. Therefore, in order to improve the mill rigidity, for example, in the case of a one-type reduction screw, if the diameter of the screw is increased, the device becomes large and becomes uneconomical.

In addition, if a roll shift mechanism is provided to shift the roll axis and the roll is retracted to the outside of the pass line, the main feature of shape manufacturing is that various sizes can be freely and efficiently created in the rolling process. In the equipment installation, the rolls are not parallel to the line flow direction, but have a skinny angle. Therefore, as shown in Figure 6, H
Roll on the outside of the shaped steel flange! , the required stroke of the roll shift device becomes longer and the mill rigidity in the thrust direction decreases.

Therefore, when a one-screw type is used to improve the mill rigidity, for example, for retracting the rolls, if the screw diameter is increased, the device becomes large and uneconomical. In addition, in the figure, Sl indicates the H-section steel before widening, and S2 indicates the H-section steel after widening.

On the other hand, when rolling using a reverse rolling mill, before the last pass, if the side rolling mill is placed at a distance so that the rolls of the intermediate rolling mill and the profile do not interfere, the line length will be longer. It has the disadvantage of becoming. Furthermore, when adapting to an existing line, product length is limited.

[Problem to be solved by the invention]

The present invention was made in view of the above-mentioned problems, and by economically ensuring high mill rigidity in the thrust direction of the diagonal roll of an intermediate rolling mill, various sizes of shaped products with flanges can be manufactured. The purpose of the present invention is to make it possible to freely produce different types of products in a rolling process economically, efficiently, and with good dimensional accuracy.

[Means to solve the problem]

The shape manufacturing apparatus of the present invention includes a roll device consisting of a pair of cantilever roll stands arranged opposite to each other on both sides with the pass line of the shape in between, and an upper part or an upper and a lower part on the pass line side of the shape. This objective has been achieved by providing a stand interval adjustment device which is provided to change the stand interval in accordance with the roll interval.

As the stand interval adjustment device, a worm jack using a screw mechanism, an electric cylinder, a screw jack, etc., a hydraulic stepping cylinder using a hydraulic mechanism, etc. can be arbitrarily used.

[Effect]

By providing a stand interval adjustment device that can change the stand interval according to the roll interval above the pass line of the pair of cantilever roll stands, the stand tilts (rotates) using point A shown in Fig. 4 as a fulcrum. In contrast, the inclination (rotation) of the roll in the thrust direction is suppressed. Therefore, the mill rigidity in the thrust direction of the roll is greatly improved. Furthermore, by providing the stand interval adjustment device below the pass line, the mill rigidity against the thrust load of the rolls is greatly increased. This includes the stand, shift frame, and sole plate.

There is no need to make the shift frame clamp device, skew roll width setting device, etc. highly rigid and robust, and a significant increase in cost can be suppressed.

〔Example〕

Embodiment 1 With reference to FIG. 1 showing an overall schematic view of the profile manufacturing apparatus of the present invention and FIG. 2 showing the main parts thereof, a pair of cantilever roll stands IA and IB are arranged opposite to each other in the center of the apparatus. established as
A material S is supplied to the pass line. In addition, a sole plate 2 is provided at the lower center of the device, and a pair of shift frames 3A and 3B are provided on the left and right sides of the sole plate 2.
is placed. These pair of shift frames 3A
.

3B is a mechanism that reciprocates on the sole plate 2 by shift cylinders 4A and 4B. That is, when the shift cylinders 4A and 4B expand and contract, the shift frame 3A
, 3B, and the shift frames 3A, 3B move on the sole plate 2 via brackets 5Δ, 5B that are fixed to the rods of the shift cylinders 4A, 4B.

Cantilever roll stands IA and IB are mounted on the shift frames 3A and 3B, respectively.

Further, a lower stand interval adjustment device 6 is provided in the center of the sole plate 2. This lower stand interval adjustment device 6 is a differential worm jack driven by a lower stand interval adjustment device drive motor (not shown). A and 7B are actuated to move the worm gear screw tips 8A and 8B back and forth according to the required stand spacing to adjust the stand spacing.

Liners 9A and 9B are provided on the sides of the cantilever roll stands IA and IB, respectively.

The shift frames 3A and 3B are provided with stand clamp devices 10A, IOB, IOC, and IOD for fixing the cantilever roll stands IA and IB, respectively.

On the other hand, a pair of upper stand interval adjustment devices 11A, IIB are provided at the upper part of the cantilever roll stands IA, IB, and the worm jacks 12A, 12B are driven by the upper stand interval adjustment device drive motor (not shown), and the worm jackets 13A, 13B are driven by the upper stand interval adjustment device drive motor. The stand spacing can be adjusted by moving the stand back and forth according to the required stand spacing. These lower worm gear screw tips 8A, 8B and the upper worm gear screw tip 13A.

The amount of movement of 13B is configured to be consistent.

The cantilever roll stands IA and IB can be horizontally rotated by skew angle setting devices 14A and 14B. The skinny angle setting devices 14A and 14B are comprised of a stand turning drive motor (not shown), a pivot at the center of the worm jacks 15A and 15B, etc. for setting the skinny angle.

As mentioned above, the shift frames 3A and 3B have a mechanism that reciprocates on the sole plate 2 by the shift cylinders 4A and 4B, and a pair of cantilever roll stands IA
, the IB can be shifted to a position where it does not interfere with the rolled material except during necessary rolling material passes.

In addition, the stand interval during rolling is shift cylinder 4A,
Shift frames 3A and 3B by 4B,
The cantilever roll stands IA and IB placed on the shift frames 3A and 3B are moved by the stand interval adjustment device 6. I
It is set by pressing it against IA and IIB.

In addition, the shift frames 3A and 3B are connected to the sole plate 2.
Clamp cylinder 2A attached to.

2B, 2C, and 2D are configured to be clamped at a predetermined position during rolling or during rolling retraction.

In the figure, 16A and 16B are pins 17A, 17B, 17C, 17 for reproducibly setting skinny angles.
D is the drive spindle of the roll device, which is a telescoping mechanism to enable stand shifting. 18
A.

18B is a speed reducer that reduces the rotational speed of a roll drive motor (not shown) to drive the drive spindles 17A, 17.
B.

The rotational force is transmitted to 17C and 17D. Also, 19A
.

19B is a lowering device for the rolls 2OA, 20B, 20C, and 20D, and 19C and 19D are lifting devices, which utilize an eccentric lowering mechanism.

Although the case where the upper stand interval adjustment device is installed on each of a pair of stands is shown, it may be installed only on either one of the stands.

Alternatively, it may be fixedly installed on a stand independent from the stand instead of being installed on the stand.

FIG. 3 shows another embodiment of the invention. 1st
The same parts as those in the figure and the second figure are given the same reference numerals, and the explanation will be omitted.

In the figure, a male screw shaft 23 directly connected to the shaft 22 of a motor 21 rotates, and brackets 24A and 24B fixed to the shift frames 3A and 3B move left and right, thereby causing the shift frames 3A and 3B to reciprocate. It looks like this. In addition, in the one shown in FIG. 3, the stand interval adjustment device is provided only at the upper part.

As described above, according to this embodiment, the shift frame 3A
, 3B can be shifted left and right on the sole plate 2, and the cantilever roll stands IA, , IB can be shifted to positions where they do not interfere with the rolled material, so the product length can be reduced without changing the length of the existing line. Economically, efficiently, and with dimensional accuracy, flanged profiles, i.e., H-shapes, grooves, and similar profile products of various sizes, can be freely rolled in the rolling process without modification. It can be made separately. In addition, high mill rigidity in the thrust direction of the roll can be maintained and ensured. Furthermore, since the stand is shifted to the outside of the pass line, there is no restriction on interference between the rolls, so it is possible to handle webs with small heights.

〔Effect of the invention〕

The shape manufacturing apparatus of the present invention can have the following effects.

That is, since the stand interval adjusting device is provided at the upper part of the pair of cantilever roll stands on the rolling material pass line side, or at the upper and lower parts, high mill rigidity in the thrust direction of the rolls can be economically ensured. In addition, since the cantilever roll stand can be quickly shifted, it is possible to manufacture a section having a flange without changing the length of the existing line or without changing the length of the product. As a result, H-shaped, groove-shaped, etc. shaped members having flanges can be freely produced in the rolling process economically, efficiently, and with high dimensional accuracy.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention. Fig. 1 is an overall schematic diagram of the shape manufacturing apparatus of the present invention, Fig. 2 is a front view of the main part showing one embodiment of the invention, and Fig. 3 is a main part showing another embodiment of the invention. FIG. 4 is a front view of a main part of a conventional shape manufacturing apparatus. FIG. 5 and FIG. 6 are diagrams for explaining the problems of the conventional device. 11, IB: Cantilever roll stand 2: Sole plate 3A, 3B Shift frame 4A, 4B + shift cylinder 5A, 5B: Bracket 6: Lower stand interval adjustment device 7A, 7B: Differential worm jack 8A, 8B: Worm jack screenie Tip 8A, 8
B: Holder is liner 10A, 10B, 10C, 100: Stand clamp device 11A, IIB: Upper stand interval adjustment device 12
A, 12B: Worm jack 13A, 13B
: Worm jack screeny tip 14A, 14B
: Skip angle setting device 15A, 15B : Worm jack 16A, 16B : Pin 17A, 17B, 17C, 17D : Drive spindle 18A, 18B : Reducer 19A, 19B, 19C, 19D : Drop-down lifting device 2
OA, 20B, 20C, 200: Roll 21: Motor 22: Shaft 23A, 23B: Male screw shaft S: Material such as H-section steel S, -: H-section steel before widening S2: H-section steel after widening Patent application Mr. Hito Kobori, representative of Nippon Steel Corporation Co., Ltd.

Claims (1)

[Claims] 1. A roll device consisting of a pair of cantilever roll stands disposed opposite to each other on both sides with the pass line of the profile in between;
A shape material manufacturing apparatus comprising: a stand interval adjustment device provided above the pass line of the shape material so that the stand interval can be changed according to the roll interval. 2. A roll device consisting of a pair of cantilever roll stands arranged oppositely on both sides with the pass line of the profile in between;
A shape manufacturing apparatus characterized by comprising stand interval adjustment devices provided above and below the pass line of the shape so that the stand interval can be changed according to the roll interval. 3. A pair of cantilever roll stands placed opposite each other across the pass line of the profile are installed so that they can be quickly shifted to a position where they do not interfere with the rolled material, and are shifted to the rolling position only during the necessary pass. A shape manufacturing apparatus according to claim 1 or 2, characterized in that: