JPS60257901A - Edger - Google Patents

Abstract

PURPOSE:To edge efficiently a slab by installing forging tools which are different in the rate of edging to two sets of cranks of different directions attached to crank shafts thereby providing an edger for a rolling slab. CONSTITUTION:A rolling slab 1 is moved by feed rollers 9 in an arrow A direction. The crank shafts 6a, 6b which have the cranks 4, 5 of different directions and are attached with the forging tools 2a, 2b, and 3a, 3b by means of connecting rods 7, 8 having different lengths to the respective cranks 4, 5 are disposed to both sides of the slab 1. While the slab 1 is conveyed in the direction A, the two shafts 6a, 6b are rotated, by which the slab is edged efficiently in two stages with two sets of the tools 2a, 2b and 3a, 3b.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention compresses the width of a rolled slab in multiple stages using a forging method, and although the amount of crushing at one time is small, the overall amount of crushing is large, resulting in efficient width compression. This relates to a width cutting device that enables work.

[Conventional technology]

In order to efficiently perform width reduction work on rolled slabs, it is desirable to increase the amount of width reduction (smashing amount) as much as possible (1).

However, if you try to obtain a larger width removal amount than the conventional width removal device Sini, (1) the rolled slab will be curved in the width direction (2);
1) Problems arise such as the load increases and the drive device becomes strained.

[Problems to be solved by the invention] The present invention has been made to solve the problems (i) and (H) above and to provide a width killing device that enables efficient width killing work. .

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention connects a plurality of sets of forging tools for forging a material in the width direction of the plate by connecting the forging tools and the eccentric part with a connecting rod so that the forging tools of the material can be pushed and pulled.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

(2) Figure 1 shows an overview of the present invention, and shows a rolled slab (1).
Two sets of forging tools (2a) C2b), (3
a) Hold (3h) along the pass line of the rolled slab so that it can move in the width direction. Two cranks f4 with crank arms having different directions on both sides of the pass line of the rolled slab
1 (5), and the forging tools (2a) (2A), (3a) (3b) can be pushed and pulled by rotating the crank axles (6a) (6A). Forging tool (2a) (2!+) , (
3 (Z) (3h) and cranks (4) (5) are connected by a connecting rod (71 (8)), a feed roller (9) installed along the pass line, a device for driving the feed roller (9), etc. Slab (1) rolled by a feeding device consisting of
C2 so as to send it in the direction of the arrow (10), and the forging tools (3a) (3h) in the later stage than the forging tools (2α) (C2b) in the previous stage
The length of the connecting rod (71 (8) (7) of each stage is determined so that the amount of crushing is large, and both crank axles (6
a) Transmit the rotation of the drive shaft (12) to (6b) via the transmission mechanism (11a) (11h), and send the rolled slab (1) at a predetermined timing to forge the front and rear forging tools <2 (L) C2
h) , (3a) C3b) D-rolled slab (1)
is forged in multiple stages.

Figure 2 shows the relationship between the movement of the forging tool and the feeding timing of the rolled slab in the width cutting device with the above configuration, where the vertical axis is the stroke position of the forging tool, the horizontal axis is time, and (A) is the previous forging tool. (B) represents the movement of the forging tool in the later stage, and rolling occurs between the end of forging by the forging tool (3a) (C3b) in the later stage and the start of forging by the forging tool (2a) (2h) in the earlier stage. The slab (1) is fed, and the feed amount is within the tool width (W).

In this way, multiple sets of forging tools are used and the width is compressed in multiple stages with the phases shifted, so although the amount of crushing with one set of forging tools is small, it is possible to obtain a large amount of crushing as a whole, which is highly efficient. In addition to being able to perform width cutting work, the forging of the subsequent stage starts after the forging of the previous stage is completed (2), so the load on the forging tool drive device (2) is not excessive, making it safe, and furthermore, it is safe. Since the amount is appropriately selected in relation to the width of the forging tool and the pitch of the forging tool, the crushing method can be made uniform.

It should be noted that the present invention is not limited to what is shown in the above embodiments, and for example, three or more sets of forging tools may be used to reduce the width in multiple stages, and in the above embodiments, a crank axle is used. Although we have shown an example in which multiple forging tools are driven, the shaft that drives the forging tools is not limited to just the crank axle; in short, it may be any shaft that has eccentric parts that have different eccentric directions. Of course, various other changes may be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the present invention, as described above, (I) the amount of crushing in each stage is small, so the rolled slab will not be curved; ([11) The load on the drive device of the forging tool does not become excessive and is safe, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an overview of the present invention, and FIG. 2 is a diagram showing the relationship between the movement of a forging tool and the rolling slab feeding timing in the present invention. (1) is a rolled slab, (2a) (2h) (3a) (3b
) is a forging tool, (4) (5) is a crank, (6a) (
6h) is the crank axle, (7) and (8) are the connecting rods, (10) is the feed direction, and (12) is the drive shaft. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1) A plurality of sets of forging tools for forging the material in the sheet width direction are installed along the pass line of the material, and a shaft with a plurality of eccentric parts with different eccentric directions is provided on both sides of the pass line. A width cutting device characterized by connecting a forging tool and an eccentric part with a connecting rod so that the forging tool can be pushed and pulled by rotation.