JPH0453601B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a ribbon wire forming method by rolling for the purpose of forming a thin plate of a predetermined size from a wire rod by roller rolling.

(Prior art) Regarding conventional ribbon wire forming, there is a method of cutting a wide steel plate into a predetermined width and rolling it, or an apparatus and method of rolling a round or square wire in its diameter (or width) direction. No. 3761) is known and has achieved considerable results. Furthermore, a method was known in which a wire rod was rolled in the width direction on a tool to form a strip with an irregular cross section (Japanese Patent Laid-Open No. 179528/1983).

(Problems to be Solved by the Invention) Among the conventional rolling methods described above, the former is thinner at both edges than at the center, which is insufficient for products requiring high dimensional accuracy, and improvements have been studied.
As for methods for preventing edge drops, there is no effective means for completely preventing them, and its improvement has been an important issue for engineers in the relevant industrial field.

In addition, as a method to prevent edge drop,
A technique is known in which the back-up roller is moved in the axial direction, thereby changing the supporting force of the rolling roller, but this method can only correct when the width of the plate is 50 mm or more. Not only is it difficult to use it for rolling relatively narrow ribbon wires as is currently desired, but there are also problems in that the equipment becomes complicated and expensive.

It is also widely practiced to prevent edge drops by changing the crown curve of the surface of the rolling roller, but there are circumstances in which it is difficult to polish the surface of the rolling roller, and the crown curve must be changed for each material to be rolled. However, there were many practical problems.

Among the conventional rolling methods, although the latter method is effective in forming strips with irregular cross-sections, there is no means to effectively solve edge drops, and it has been difficult to obtain highly accurate cross-sectional shapes.

(Means for Solving the Problems) However, in the present invention, by forming the intermediate material before finish rolling, it was possible to successfully obtain a highly accurate ribbon wire.

In order to increase the width of the wire in a direction perpendicular to the central axis of the wire, the present invention includes a first rolling step in which at least one rolling roller has an axis parallel to the central axis of the wire and rolls the wire; In order to form both edges of the cross section perpendicular to the central axis thicker than the center, a rolling roller installed on an axis parallel to the central axis of the wire and an anvil with a slightly deeper indentation at both edges are used. This is a ribbon wire forming method by rolling, characterized in that after performing the second rolling using the combination, rolling is performed in a direction parallel to the central axis. In this case, the first rolling is carried out using a pair of rollers whose axes are parallel to the central axis of the wire rod, or a combination of one roller and a corresponding anvil, so that the width is several times the diameter of the wire rod. Roll to Next, the second rolling is performed by forming both edges thickly using one roller and a corresponding grooved anvil, and then finishing rolling is performed using a roller installed with an axis perpendicular to the central axis of the wire. This is what we do.

In the case of this finish rolling, the extension in the axial direction is extremely small, in order to achieve the required dimensions and high precision. Therefore, when adjusting the thickness in the second rolling, it is necessary to determine the thickness in consideration of the reduction rate of the finish rolling and the edge drop. The thickness of both edges can be arbitrarily adjusted by changing the shape and depth of the groove provided in the anvil.

The above described a configuration in which finish rolling is performed after the first rolling and the second rolling, but if a grooved anvil is used in the first rolling, the first rolling and the second rolling can be performed at the same time. This means that finish rolling can be carried out immediately.

(Function) That is, according to the present invention, the wire rod is formed into an arbitrary width in the axial direction by the first rolling, and then into a predetermined cross-sectional shape by the second rolling. Ribbon wire products can be made with high precision and uniform thickness. In addition, cross-rolling strengthens the material in both the vertical and horizontal directions.

Next, embodiments of the invention will be described.

(Embodiment 1) An embodiment of the present invention will be described with reference to FIG. 1. By reciprocating a pair of rollers 2 and 2a installed parallel to the central axis of a round wire 1, the diameter of the round wire 1 can be adjusted. The first intermediate product 3 is formed by rolling in this direction. This first intermediate product 3 is rolled by a combination of the left and right reciprocating motion of the roller 4 and the grooved anvil 5 to form a second intermediate product 6. In this case, both ends a and b of the intermediate product 6 are formed to be slightly thicker. The intermediate product 6 is then finished rolled by a pair of rollers 7, 7a installed perpendicularly to the center axis thereof to form a ribbon wire 9.

(Embodiment 2) Another embodiment of the present invention will be described with reference to FIG. 2. A round wire 1 is rolled by a combination of the left and right reciprocating motion of a roller 4 installed parallel to its central axis and a grooved anvil 5. Then, a pair of rollers 7 installed perpendicularly to the central axis of the intermediate product 8,
7a, a ribbon wire is produced. 11 in the figure is a groove of the anvil 5.

In this embodiment, the first rolling and the second rolling are performed simultaneously.

(Embodiment 3) In place of one rolling roller and the grooved anvil in Examples 1 and 2, a pair of rolling rollers 13 and 14 as shown in FIG. 8 may be used. In this case, the chain line portions 13a, 14a (conventional curves) of each rolling roller 13, 14 are the solid line portions 13b,
14b, the edge drop of the intermediate product 15 does not occur, and by adjusting the curves of the solid line portions 13b and 14b, the intermediate product 1
It is also possible to mold both ends of 5 to be slightly thicker than the center.

(Effects of the Invention) According to the present invention, the wire rod is rolled in the width direction, and the thickness of both edges is corrected to be slightly thicker during the width direction rolling, so rolling in the central axis direction is performed for finishing. Prevents edge drops when
This has the effect of making it possible to continuously form a ribbon wire with good thickness accuracy.

Further, since cross rolling is automatically performed during the forming process, the material quality of the ribbon wire rod is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the transition of a molded product in each implementation process of this invention, FIG. 2 is an explanatory diagram of the transition of a molded product in another implementation process, and FIG. 3 is a plan view of the main part of the rolling equipment in the same implementation process. Figure 4 is also a front view,
FIG. 5 is a partially enlarged view of a pair of rolling rollers, FIG. 6 is a partially enlarged view of the rolling roller and anvil, and FIG. 7 is a cross-sectional view of the anvil.
FIG. 8 is a partially enlarged view of the roller when obtaining an adjusted cross section without using a grooved anvil. 1... Round wire, 2, 2a... Roller, 3... First intermediate product, 4... Roller, 5... Grooved anvil, 6... Second intermediate product, 7, 7a... Roller,
8...Intermediate product.

Claims (1)

[Claims] 1. In order to increase the width of the wire rod in a direction perpendicular to its central axis, at least one rolling roller is installed on an axis parallel to the central axis of the wire rod and rolls the wire rod. In order to make both edges of the cross section perpendicular to the central axis thicker than the center, the rolling roller installed on an axis parallel to the central axis of the wire and the indentation of both edges were made slightly deeper. A method for forming a ribbon wire by rolling, characterized in that after performing a second rolling using a combination with an anvil, rolling is performed in a direction parallel to a central axis. 2. The first rolling is ribbon wire forming by rolling as described in claim 1 using a pair of rolling rollers or a combination of one rolling roller and an anvil installed on an axis parallel to the central axis of the wire rod. Method. 3. The ribbon wire forming method by rolling according to claim 1, wherein the second rolling uses a combination of one rolling roller and a grooved anvil installed on an axis parallel to the central axis of the wire rod.