JPH01150401A - Rolling mill for wire-shaped body - Google Patents

Abstract

PURPOSE:To obtain a wire-shaped body of a prescribed section by installing a guide member having a long parallel part between a 1st and 2nd rolling stands and a hourglass-shaped guide roller in the 2nd stand side respectively and limiting a length of the parallel part and a clearance against a stock to move a stock in the vertical direction and rolling the stock. CONSTITUTION:A guide member 26 having a parallel part whose length is >=70% of the total length is installed between a 1st rolling stand 16 provided with rolling rolls 12, 12' having a slant shoulder face and a 2nd rolling stand 18 provided with cylindrical rolling rolls 14, 14' and a hourglass-shaped guide roller 28 is also installed in the stand 18 side. A lateral clearance between a parallel part 26a of the member 26 and a rolled stock is set to <=10% of a width of the stock and a clearance between the roller 28 and the stock is set to <=5% of a sectional size of the stock. The stock is drafted downward from the left side and upward from the right side to form a section of the stock into a rectangular shape and is rolled by the stand 18 so that the stock goes up in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a linear body rolling mill for manufacturing a linear body having a predetermined cross-sectional dimension.

(Prior Art) The present applicant previously proposed a method consisting of multiple pairs of rolling rolls in order to roll a linear body, which is a rolling material, from various angles, and these multiple pairs of rolling rolls were arranged on axes parallel to each other. The six pairs of rolling rolls each have inclined shoulder surfaces that are inclined with respect to the axis and face each other across a rolling gap, and some of the plurality of pairs of rolling rolls are inclined with respect to the other pairs of rolling rolls. He proposed a rolling mill in which the shoulder surfaces are alternately formed in opposite directions (see Japanese Unexamined Patent Publication No. 59-87701).In this rolling mill, the rolling rolls are all arranged on parallel axes and the same This is advantageous because the overall size of the apparatus is reduced because of the orientation, and changes in the cross-sectional dimensions of the product can be achieved by simply adjusting six pairs of rolling gaps. However, in this rolling mill, as the rolling rolls rotate, the contact position with the linear body, which is the rolled material, tends to shift, causing the rolled material to fall.
In order to avoid this drawback, the above-mentioned rolling mill has a pair of cylindrical rolling rolls (first pair of rolling rolls) downstream of a rolling stand (first rolling stand) including rolling rolls with inclined shoulders (first pair of rolling rolls). proposed a linear body rolling mill further equipped with a rolling stand (second rolling stand) containing two pairs of rolling rolls (see Japanese Patent Application Laid-Open No. 187401/1983).
- In this rolling mill, the rolled material passing through the first rolling stand is slightly rotated and twisted by the moment given by the rolling rolls of this rolling stand, as already mentioned, but this twisting is caused by the next cylindrical rolling roll. The vertical alignment advantageously prevents the rolled material from tipping over.

In this rolling mill, the rolled material exits the rolling roll with the inclined shoulder surface and enters the cylindrical rolling roll while its torsion is corrected, but the rolling material does not rise between the first rolling stand and the second rolling stand. Not enough or too twisted. For this reason, a guide means for guiding the rolled material while forcibly deforming it between the nine rolling stands is required, but the guide means of the prior art is a separate guide means provided close to the first and second rolling stands. Since it consists of only a guide member, it is difficult to maintain the natural rise of the material in the middle, and it is difficult to obtain a predetermined cross-sectional shape of the material.

(Object of the Invention) An object of the present invention is to provide a linear object rolling machine that can naturally stand up a linear object, which is a rolling material, and guide it to a rolling stand having cylindrical rolling rolls without unreasonably deforming it. (Structure of the Invention) A linear body rolling mill according to the present invention has first and second rolling rolls each having a first and second pair of rolling rolls arranged on mutually parallel axes. The first pair of rolling rolls has inclined shoulders inclined with respect to the axis thereof and facing each other across a rolling gap, the second pair of rolling rolls are cylindrical rolls, and the first pair of rolling rolls are cylindrical rolls. and a second rolling stand, the guiding means being arranged between the first and second rolling stands.
and a second rolling stand, and a guide member having a parallel portion over 70% or more of the total length, and a drum-shaped guide roller provided at the end of the guide member on the second rolling stand side. The widthwise clearance of the parallel portion to the rolled material is within 10% of the width of the rolled material, and the clearance of the guide roller to the rolled material is set within 5% of the cross-sectional dimension of the rolled material. It is characterized by

In this way, the rolled material is guided by the long parallel portion of the guide member so that the cross section of the material naturally rises vertically while it advances toward the cylindrical rolling rolls, without causing any undue deformation to the material. Therefore, a linear body having a predetermined cross section can be obtained.

(Example) An example of the present invention will be described in detail with reference to the drawings. Figs. 1 and 2 show a linear body rolling @10 according to the present invention, and this linear body rolling alO is mutually A first and second pair of rolling rolls 12.12', 1 arranged on axes parallel to
It consists of a first and a second rolling stand 16.18 each having an angle of 4.14° and a first pair of rolling rolls 12.12.
As shown in FIG. 2, the rolling rolls 14, 14° have inclined shoulder surfaces 20, 22, respectively, which are inclined with respect to the axis thereof and face each other across a rolling gap, and the rolling rolls 14, 14° of the second pair are It has a cylindrical shape. These pairs of rolling rolls 12.1
2' and 14.14' are driven by a driving mechanism (not shown) connected to one end of the roll shaft, and
Guide means 24 are arranged extending between the first rolling stand 16 and the second rolling stand 18.

As shown in FIG. 3, this guide means 24 is a guide that extends between the first rolling stand 16 and the second rolling stand 18 and has parallel portions 26a that extend over 70% of the total length. member 26 and a drum-shaped guide roller 28 provided at the end of the second rolling stand 18 of the guide member 26.
It consists of. The guide roller 28 is shown in FIG. 4(A).
It is also possible to use shapes as shown in (C). The parallel portion 26a of the guide member 26 has a widthwise clearance within 10% of the width of the rolled material l (see FIG. 5), and the guide roller 28 has a widthwise clearance of less than 10% of the width of the rolled material l (see FIG. 5). It has a clearance within 5% of the cross-sectional dimension of 1.

In this way, the long parallel portion 26a of the guide member 26
As the rolled material l advances toward the second pair of rolling rolls, ie, the cylindrical rolls, the cross section of the material naturally stands up vertically, and is guided without causing any undue deformation or addition to the material. It is possible to obtain a linear body having a predetermined cross section. In addition, the guide member 26 and the guide roller 2
If the clearance for rolling material l in No. 8 is too large,
Although the rolled material 1 buckles within the guide means 24, it has been confirmed that buckling of the rolled material is effectively suppressed when the clearance is set as described above.

This linear body rolling mill is as shown in FIG.

A linear body, which is a rolling material 1, is passed through a rolling stand 16° 18, and the linear body 1 is rolled down diagonally from the left and right. Figure 5 (
A) and (B) show an example of the rolling of the linear body 1, in which the linear body 1 is first rolled down from the upper left and lower right by the rolling stand 16 as shown in FIG. Shape 2
The next rolling stand 18 raises and rolls the product so that the cross section becomes vertical as shown in FIG. 5(B). Such rolling passes through a second and third set of similar rolling stands, and the cross section is compressed to obtain a linear body having a predetermined cross-sectional size and shape.

(Effects of the Invention) According to the present invention, as described above, while the rolled material progresses from the first rolling stand having the rolling roll with #1# shoulder surface to the second rolling stand having the cylindrical rolling roll. The long parallel part of the guide means allows the cross section of the material to stand up vertically naturally, thereby making it possible to obtain a linear body with a predetermined cross section without applying undue deformation to the material. There is a practical benefit in that the rolled material does not buckle and the work can be carried out smoothly.

[Brief explanation of the drawing]

FIG. 1 is a schematic system diagram of a linear body rolling mill according to the present invention, and FIG.
The figure is a front view of a rolling stand having the first pair of rolling rolls, FIG. 3 is an enlarged sectional view of the guide means, and FIGS. A front view showing an example, and FIGS. 5(A) and 5(B) are cross-sectional views sequentially showing cross sections of a linear body rolled by the linear body rolling mill of the present invention. 10----linear body rolling mill, 12.12'-1111 first pair of rolling rolls, 14.14'----ti
S2 pair of rolling rolls, 16.18-1111 rolling stand, 20.22--711 inclined shoulder surface, 242----
Guide means, 26--Guide member, 26a--
Parallel portion, 28 - drum-shaped guide roller. , 9 zeto l- cusp 1 Fig. 1 In Fig. 2 Fig. 4 cA+ (B>
(C) Figure 5 (B) [[:1”, 7

Claims (1)

[Claims] comprising first and second rolling stands each having a first and a second pair of rolling rolls disposed on mutually parallel axes, said first pair of rolling rolls being inclined with respect to the axis thereof and mutually parallel to each other; have inclined shoulder surfaces facing each other across a rolling gap, the second pair of rolling rolls are cylindrical rolls, and between the first rolling stand and the second rolling stand. In the linear body rolling mill, the guide means extends between the first and second rolling stands and has a parallel portion over 70% or more of the total length. It consists of a guide member and a drum-shaped guide roller provided at the end of the guide member on the second rolling stand side, and the clearance in the width direction of the parallel portion of the guide member relative to the rolled material is equal to the width of the rolled material. 10% or less, and a clearance of the guide roller to the rolling material is set to within 5% of a cross-sectional dimension of the rolling material.