JP2756402B2 - Manufacturing method of deformed cross section material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal strip having a portion having a different thickness in the width direction continuously in the longitudinal direction, that is, a so-called irregularly shaped strip.

[0002]

2. Description of the Related Art As metal strips used for electronic parts such as semiconductors and transistors, odd-shaped cross-section strips, for example, those having thin portions continuously formed on both sides of a thick portion are used.

[0003] The following method is known as one of the methods for producing this irregularly shaped strip. That is, a flat strip is placed on the projection of a flat disk-shaped V-die having a V-shaped projection, and a flat roll is applied while applying a force to press the strip from above the strip. Reciprocating rolling, biting the protrusion of the V-shaped die on the surface opposite to the rolling surface of the flat roll of the strip,
This is a method of forming the strip into an irregular cross-section while repeatedly intermittently moving the strip in the direction facing the tip angle of the projection.

According to this method, there is an advantage that the flow of the material in the width direction of the strip is large, and the material can be formed to a predetermined size in one step. However, in this method, since the forming process is intermittent, there is a limit in improving the processing speed.

[0005] As a method for solving this problem, the outer periphery of a planetary rolling mill in which a plurality of planetary rolling rolls are arranged on the circumference is provided.
A method of arranging a V-shaped die that is curved with the rolling surface having a projection inside, and supplying a strip between the V-die and the planetary rolling mill, continuously rolling the strip. Proposed.

[0006]

SUMMARY OF THE INVENTION
Although it is effective in increasing the processing speed, the curved surface of the V-die makes it difficult to process the V-die, which increases the cost, and also makes it difficult to adjust the rolling dimension. There is.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide a method capable of easily obtaining a deformed cross-section material with high accuracy, in which adjustment of a reduction dimension is easy.

[0008]

SUMMARY OF THE INVENTION A method according to the present invention comprises resiliently supporting each planetary roll of a planetary mill such that its axis can move radially with respect to the axis of revolution. A part of the orbit is formed as a straight line, and a flat plate-shaped V-shaped die is arranged at a portion facing the trajectory of each of the planetary rolling rolls passing through the straight-line orbital portion. By introducing a strip material in between, the strip material is continuously pressed against the rolled surface of the V-shaped die by a planetary rolling roll of a planetary rolling mill to perform rolling processing. is there.

[0009]

According to the present invention, each planetary rolling roll of the planetary rolling mill is elastically supported so that its axis can move radially with respect to the axis of the orbit, and a part of its orbit is formed. If it is made straight, each planetary rolling roll revolving along the track draws a linear trajectory in the straight portion of the track, and the material passing therethrough will be continuously pressed against the rolled surface of the V-die, Even if the V-die is a flat plate, it can be easily rolled.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 schematically shows an example of a rolling apparatus suitable for carrying out the method according to the present invention. The main part of the apparatus is a flat plate-shaped V-shaped die 2 and its rolled surface. It consists of a planetary rolling mill 5 arranged on the side.

As shown in FIG. 2, the rolled surface of the V-shaped die 2 is formed with two protrusions 3 diverging in a V-shape from the tip end at a predetermined interval in the width direction. The protrusions 2 have the same width after the end of the spread, but have slopes 4 which are rolled surfaces in the width direction, respectively, at the side edges on the tip side.

Although not shown, the flat plate-shaped V-shaped die 2 has its back surface supported by dimension adjusting means attached to the housing.

On the other hand, a planetary rolling mill 5 supports a plurality of planetary rolling rolls 6 having the same diameter at equal intervals on the circumference thereof, and is rotatable about a shaft 8; And a non-rotating wheel-shaped rail 9. The portion of the rail 9 facing the V-shaped die 2 is a straight surface 10 having a length substantially equal to the length of the V-shaped die 2.

The rotor 7 is, as shown in FIG.
Are arranged on both sides of the rail 9 with a shaft 8 via a bearing 11, and are rotatable with respect to the shaft 8. Accordingly, by rotating the rotor 7 by a driving mechanism (not shown), each planetary roll 6 can revolve around the rail 9.

As shown in FIG. 4, each of the planetary rolling rolls 6 has a shaft 61 protruding on both sides thereof and a bearing 12 respectively.
The bearing 13 is elastically supported between the rotor 7 and the rotor 7 via a compression coil spring 14, respectively, and the axis of the roll 6 is It can move toward the axis. In this case, a compression coil spring having a strength such that the planetary roll 6 can overcome the centrifugal force even when the rotor 7 rotates at a predetermined speed is used.

The spring 14 may be a tension spring or an elastic body such as a fluid pressure cylinder or rubber.

As shown in FIG. 4, wheels 15 having a small width and a predetermined outside diameter are rotatably mounted on the shafts 61 on both sides of each planetary roll 6 as shown in FIG. The outer peripheral surface of the wheel 15 can be constantly contacted with the outer peripheral surface of the rail 9 by being pushed toward the axis of the rotor 7 by the compression coil spring 16. Therefore, when the rotor 7 is driven to rotate, each planetary rolling roll 6 is kept at a certain distance from the outer peripheral surface of the rail 9 so that the rail 9
Around the periphery of the rail 7 and draw a circular locus at a portion other than the linear surface 10 portion, but draw a linear locus at the linear surface 8 portion. If there is the strip 1 there, it acts so as to press the strip 1 against the V-die 2 while rotating.

It is desirable to make a curve between the arc surface and the straight surface 10 of the rail 9. As shown in FIG. 1, the rolling process performed by the apparatus having the above-described configuration is a flat plate-shaped V
This is performed by introducing the plate-shaped strip 1 between the die 2 and the planetary rolling mill 5 and driving the planetary rolling mill 5 to pass the strip 1 linearly.

In this case, the V-shaped die 2 is adjusted by operating the dimension adjusting means or the like (not shown) in accordance with the dimensions of the obtained irregularly shaped section material, but the V-shaped die 2 is a flat plate. Therefore, the adjustment is easy.

Between the V-shaped die 2 and the planetary rolling mill 5, the strip 1
When the rotor 7 is driven and rotated at a predetermined speed in the direction of the arrow, each planetary rolling roll 6 revolves around the outer periphery of the rail 9 with the rotation of the rotor 7, and the rail 9
In order to draw a straight line locus along the straight surface 10 of the V-shaped die 2, the strip 1 positioned on the rolled surface of the V-shaped die 2
Each of the planetary rolling rolls 6 passing therethrough continuously presses from the lower surface and presses the rolled surface of the V-shaped die 2 so that the projection 3 of the V-shaped die 2 moves from the front end to the rear end. The rotor 7 moves in the rotation direction while biting into the strip 1, and the material of the portion in contact with the protrusion 3 is compressed in the thickness direction and is spread so that the portion spreads in the width direction of the strip 1.

The traveling direction of the strip 1 and the rotation direction of the rotor 7 may be opposite to each other, but the same direction can supply the strip 1 more smoothly.

Each revolving planetary rolling roll 6 is supported by a compression coil spring 14 so as to overcome the centrifugal force.
Since the rolling is performed linearly on the linear surface 10 of the rail 9, the pressing force on the strip 1 by the planetary rolling roll 6 is constant, and there is no possibility that the rolling process will fluctuate.

When the strip 1 moves in the direction of the arrow and passes the end of the V-shaped line of the projection 3 of the V-shaped die 2, the molding is completed, and as shown in FIG. A strip 20 having a deformed cross section processed to a predetermined thickness on both sides is obtained.

Since the strip 1 can be moved at a speed corresponding to the revolving speed of each of the planetary rolling rolls 6, if the strip 1 is continuously supplied, the strip 20 having a long and irregular cross section can be continuously converted. Can be molded.

The deformed cross-section strip 2 thus rolled
0 is then wound on a take-up reel with or without a take-up roll.

The above example is a case where the irregularly shaped cross-section member 20 has a convex cross section. As shown in FIG. 5, a flat disk-shaped V-shaped die 2 having one projection 3 at the center is used. For example, as shown in FIG. 6, it is possible to obtain an irregularly shaped strip 21 having thick portions on both sides, and as shown in FIG. 7, a flat disk-shaped V-shaped member having three projections 3. If the die 2 is used, as shown in FIG. 8, it is possible to obtain the irregularly shaped section member 22 having two thick sections in the width direction.

[0028]

As is apparent from the above description, the present invention is a method using a planetary rolling mill in which a part of the orbit of the planetary rolling roll is straight, and has the following effects.
Its industrial value is enormous.

(1) Since continuous processing can be performed, the line speed can be increased.

(2) Since the V-die can be a flat plate, the cost of the mold is low, and the weight can be reduced, so that the mold replacement can be performed in a short time.

(3) Since the V-die may be a flat plate, it is easy to adjust the reduction dimension for adjusting the dimensions of the product, and not only can the setup time be shortened, but also a highly accurate irregularly shaped strip can be easily formed. Obtainable.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a method according to the present invention.

FIG. 2 is an explanatory view showing an example of a flat disk-shaped V-die.

FIG. 3 is a cross-sectional view showing an example of a deformed cross-section strip.

FIG. 4 is a sectional view showing details of the device in FIG. 1;

FIG. 5 is an explanatory view showing another example of a flat disk-shaped V-die.

FIG. 6 is a cross-sectional view showing another example of a deformed cross-section strip.

FIG. 7 is an explanatory view showing another example of a flat disk-shaped V-die.

FIG. 8 is a cross-sectional view showing another example of a deformed cross-section strip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strip material 2 Flat V-shaped die 3 Projection part 5 Planetary rolling machine 6 Planetary rolling roll 7 Rotor 8 and 61 Shaft 9 Rail 10 Linear part 11, 13, and 16 Bearing 12 Bearing 14 Compression coil spring 15 Wheel 20, 21 , 22

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tomio Yoshiki 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Within the Tsuchiura Plant of Hitachi Cable Co., Ltd. (72) Tokuo Miyauchi 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Cable Inside the Tsuchiura Plant Co., Ltd. (72) Inventor Hideo Murayama 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Within Hitachi Tsuchiura Co., Ltd. Inside the Tsuchiura Plant (72) Inventor Osamu Kurihara 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Inside the Tsuchiura Plant, Hitachi Cable Co., Ltd. (72) Isao Endo 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture (72) Inventor Satoshi Tatsumi 3550 Kida Yomachi, Tsuchiura City, Ibaraki Prefecture Inside the Tsuchiura Plant, Hitachi Cable, Ltd. (72) Inventor Kazuo Ishida Tree, Tsuchiura City, Ibaraki Prefecture 3550 Yomachi Hitachi Tsuchiura Plant Tsuchiura Plant (72) Inventor Toru Matsui 3550 Kida Yomachi Tsuchiura City Ibaraki Pref. Hitachi Cable Tsuchiura Plant (56) References JP-A-60-6034 (JP, A) JP-A-2-299707 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H21H 8/00 H21B 1/08 H21B 1/42

Claims (3)

(57) [Claims] 1. A method of processing a flat strip into a strip with a deformed cross section by rolling, wherein each planetary rolling roll of a planetary rolling mill is moved radially with respect to the axis of revolution. Along with elastically supporting it, a part of its orbit is formed as a straight line, and a flat disk-shaped V-shaped die is arranged at a portion opposed to the trajectory of each planetary roll passing through the straight orbital portion. By introducing a strip between the V-die and the planetary rolling mill, and driving the planetary rolling mill, the strip is formed into a flat plate shape with each planetary rolling roll passing therethrough at a portion corresponding to the linear track. A method for producing a profiled strip having a V-shaped die. 2. The method according to claim 1, wherein the axis of each planetary roll of the planetary rolling mill is elastically supported toward the axis of its revolution. 3. The method according to claim 1, wherein the traveling direction of the strip and the revolution direction of the planetary roll are the same.