JPH06344002A - Method and device for producing flat square wire - Google Patents

Abstract

PURPOSE:To accurately and easily manufacture a flat square wire having a prescribed ratio of thickness to width by successively executing finish rolling with 2nd rolling rolls after executing preliminary rolling with 1st rolling rolls. CONSTITUTION:After preliminarily rolling a wire rod L with the 1st rolling rolls 2, 2, finish rolling is successively executed with the 2nd rolling rolls 4, 4. Since 2-3 times elongation in the longitudinal direction and 1.1-1.2 times extension in the width direction are generated in the rolling work with the 2nd rolling rolls 4, 4, the dimension of width is approximately produced with the rolling rolls 2, 2 in a 1st rolling and next the dimension of thickness is produced with the 2nd rolling rolls 4, 4. In this way, the flat square wire having the prescribed ratio of thickness to width is easily manufactured and the accuracy of rolling work is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectangular wire manufacturing method and apparatus for manufacturing a rectangular wire by rolling a round wire having a diameter of 1 mm or less.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a rectangular wire from a thin round wire drawn by a wire drawing machine, etc., this round wire is passed between rolling rolls arranged above and below a rolling stand. A method of continuously manufacturing a rectangular wire is known.

[0003]

However, when the round wire L is rolled into a rectangular wire by one rolling process, if the ratio between the plate thickness t and the plate width w is increased, t: w.
== about 1:30, it was found that the phenomenon of wrinkling of the wire L occurred as shown in FIG. Also, in this state, comparing the cross-sectional area of the round wire and the cross-sectional area of the rectangular wire, they have almost the same area.
It has also been found that the wire rod does not extend in the longitudinal direction but is deformed only in the width direction. It is considered that the reason why the limit of possible t / w is generated by one rolling process is that the wire rod tension, the wire speed, and the wire rod tensile strength largely influence.

Therefore, in the case of the conventional structure, a wavy wavy rectangular wire cannot be manufactured, and it is impossible to manufacture a rectangular wire having a predetermined thickness-width ratio with a small variation. Have inconvenience.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and a method for manufacturing a rectangular wire according to the first invention is to roll round wires that are sequentially fed into a rolling roll. When continuously rolling into a rectangular wire, the round wire is pre-rolled by the first rolling roll, and then continuously rolled by the second rolling roll to produce a rectangular wire. It is a feature.

The flat wire manufacturing apparatus according to the second aspect of the present invention comprises a first rolling roll for pre-rolling round wire rods which are sequentially fed, and a finish rolling process for the pre-rolled wire rod. It is equipped with a second rolling roll.

[0007]

The circular wire rods sequentially sent are first pre-rolled by the first rolling roll and then continuously finish-rolled by the second rolling roll to obtain a rectangular wire having a predetermined thickness and width. Will be manufactured.

[0008]

1 to 4 show an embodiment of the present invention. In this case, for example, a copper wire plated with tin or the like is drawn by a plurality of dies successively by a wire drawing machine or the like, and this drawn wire is drawn. A series of wire rods obtained by rolling the rounded wire rod L into a rectangular wire, performing continuous annealing using electrical resistance or the like in succession to this rolling work, and continuously winding the wire rod around the bobbin with a wire winding device. It is applied to the processing line.

Reference numeral 1 is a first rolling stand, in which first rolling rolls 2 and 2 are arranged vertically, and 3 is a second rolling stand, and second rolling rolls 4 and 4 are provided. Are arranged vertically, and the first rolling stand 1 and the second rolling stand 3 are arranged in series.

Since this embodiment has the above-mentioned structure, for example, wire diameters are sequentially sent from a wire drawing machine or the like, for example, wire diameter d = 0.5.
When a flat wire having a thickness of 50 μ × a width of 3 mm and a thickness t: width w = 1: 50 is manufactured by rolling a wire W having a diameter of 8 mm, the wire W having a diameter d = 0.58 mm is used as a first material. Rolling roll 2.2
Pre-rolling to a plate thickness of 100μ x plate width of 2.64mm, and then finishing rolling of this pre-rolled wire rod into a rectangular wire with a plate thickness of 50μ x plate width of 3mm continuously by the second rolling rolls 4 and 4. I am trying to do it.

In this way, the first rolling roll 2.2
By pre-rolling with the second rolling rolls 4 and then finishing rolling with the second rolling rolls 4 and 4. Since a spread of 1.1 to 1.2 occurs in the first rolling process, it is possible to obtain a plate width dimension by 2.2 in the first rolling process, and then a plate thickness dimension by the second rolling rolls 4.4. Therefore, a rectangular wire having a predetermined thickness and plate width ratio can be easily manufactured, and rolling accuracy can be improved.

As another example, for example, a wire W having a wire diameter d = 0.6 mm, which is sequentially fed from a wire drawing machine or the like, is rolled to have a plate thickness of 75 μ × a plate width of 3 mm: plate thickness t: plate Width w =
When manufacturing a 1:40 rectangular wire, wire diameter d = 0.6 mm
The wire rod W of No. 1 has a plate thickness of 100 μ by the first rolling roll 2.2.
× It is also possible to perform pre-rolling to a plate width of 2.8 mm, and then continuously finish-roll this pre-rolled wire rod into a rectangular wire with a plate thickness of 75 μ x a plate width of 3 mm by the second rolling rolls 4 and 4. Is.

The present invention is not limited to the structures shown in the above-mentioned embodiments. For example, the wire diameter of a round wire rod at the beginning of rolling, the surface reduction ratio by the first rolling roll 2.2, the second Area reduction by rolling rolls 4 and plate thickness t of rectangular wire,
The size of the plate width w, the ratio of these, and the like are appropriately changed and designed.

In the above embodiment, the plated round wire is drawn by the wire drawing machine and then the round wire is continuously rolled into the rectangular wire by the rolling machine. However, it goes without saying that plating is performed. It may also be applied to a wire rod processing line for rolling a round wire into a rectangular wire.

[0015]

As described above, the method and apparatus for manufacturing a rectangular wire according to the present invention allows the wire rod to pass through the rolling rolls to be rolled into a rectangular wire having a predetermined thickness and plate width. After the pre-rolling, the flat wire with the specified thickness and strip width ratio can be manufactured easily and accurately by performing the finish rolling with the second rolling roll. Can be good.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an explanatory front view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the wire rod before the rolling process of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view of the wire rod after the first rolling process of the embodiment shown in FIG.

4 is a cross-sectional view of the finished rectangular wire after the second rolling process of the embodiment shown in FIG.

FIG. 5 is a perspective view of a rectangular wire.

[Explanation of symbols]

 L wire rod t plate thickness w plate width 1 first rolling roll 3 second rolling roll

Claims (2)

[Claims] 1. When rolling round wire rods sequentially fed into a rectangular wire by rolling rolls, the round wire rods are pre-rolled by a first rolling roll and then second rolling. A method for manufacturing a rectangular wire, which comprises continuously finishing rolling with a roll to manufacture a rectangular wire. 2. A flat angle comprising a first rolling roll for pre-rolling round wire rods that are sequentially fed and a second rolling roll for continuously finishing rolling the pre-rolled wire rod. Wire manufacturing equipment.