JP3589068B2 - Manufacturing equipment for irregular shaped strips - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for manufacturing a profiled section in which portions having different thicknesses in the width direction are continuously present in the longitudinal direction, and in particular, to improve the quality of the profiled section to be manufactured and improve the processing speed. The present invention relates to an apparatus for producing a profiled strip.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as metal strips used for electronic components such as semiconductors and transistors, deformed cross-section strips having a thick portion and a thin portion formed by rolling are used.
[0003]
FIG. 6 shows a cross section of an irregular cross-section used for a power transistor. The cross section has a thick plate portion 5A serving as an element mounting portion and a thin plate portion 5B serving as a lead portion. 0.2 to 2.0 mm, the thickness T2 of the thin plate portion 5B is 0.4 to 0.6 mm, the total width W is 70 to 10 mm, and the ratio of the width of the thick plate portion 5A to the thin plate portion 5B is approximately 1. : 1.
[0004]
As an apparatus for manufacturing the irregularly shaped cross section, there is, for example, an apparatus using a V-shaped die. According to this manufacturing apparatus, a flat plate-shaped V-shaped die having a V-shaped projection provided on a rolled surface is prepared, a strip is placed on the projection of the V-die, and the strip is pressed by a flat roll. While the flat roll is reciprocating, the V-die protrusion is cut into the surface opposite to the rolling surface of the flat roll to plastically deform to form a thick portion and a thin portion. The deformed cross section is manufactured by intermittently repeating the rolling process while moving.
[0005]
According to the device for manufacturing the irregularly shaped cross-section, since the flow of the strip in the width direction is large, it can be formed to a predetermined size in one step.
[0006]
In recent years, electronic devices have been miniaturized, and accordingly, there has been a demand for miniaturization of semiconductor devices such as ICs and LSIs mounted on the electronic devices.
[0007]
FIG. 7 shows a cross section of an irregular cross section used for an IC or an LSI, which has a thick plate portion 6A serving as an element mounting portion and a thin plate portion 6B serving as a lead portion, and the thickness T1 of the thick plate portion 6A is The thickness T2 of the thin plate portion 6B is 0.15 to 0.40 mm, and the total width W is 20 to 40 mm.
[0008]
[Problems to be solved by the invention]
However, according to the conventional device for producing a profiled cross section, since the rolling process is intermittently performed using a V-shaped die and a flat roll, there is a limit to the improvement of the processing speed. In the case of irregular shaped strips for ICs and LSIs whose sectional area is reduced from 1/2 to 1/5, there is a problem that the processing weight per unit time becomes small and the manufacturing cost becomes large.
Accordingly, an object of the present invention is to provide an apparatus for producing a profiled strip which can increase the processing speed and reduce the production cost.
[0009]
[Means for Solving the Problems]
The present invention, in order to achieve the above-mentioned object, in a manufacturing device of a deformed cross-section to produce a deformed cross-section by rolling a flat strip with a rolling roll,
First deforming means for forming a preformed portion having a material supply amount according to the shape after rolling based on plastic deformation;
An apparatus for manufacturing a profiled strip having a second deforming means for rolling the preformed portion to form a thick plate portion and a thin plate portion with a predetermined working degree is provided.
[0010]
In the above-described apparatus for producing a profiled cross-section strip , the first deforming means includes a pair of guide rolls or guide shoes for continuously deforming a part of the strip in a plate width direction into a curved shape in the longitudinal direction of the strip. And a compression device that is provided near the guide roll or the guide shoe and applies an external force to the strip from the width direction of the strip . The second deforming means is preferably machined of the preform portion that will be formed by a strip member made of soft material is rolled to about 40%.
According to the configuration described above, it is possible to prevent the workability of the strip from being varied due to plastic deformation during rolling.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an apparatus for manufacturing a modified cross-section strip according to the present invention will be described in detail with reference to the drawings.
[0012]
FIG. 1 shows an apparatus for manufacturing a profiled strip according to a first embodiment of the present invention, in which a flat strip 1 made of copper or a copper alloy rolled by the apparatus is in contact with the strip 1. A guide roll 2A having a groove 2B on its surface, a guide roll 2C having a projection 2D formed opposite to the groove 2B formed in the guide roll 2A, and a strip material 1 provided near the guide rolls 2A and 2C. a compressor 3 for the plate width direction imparting force, rolling roll 4A rolling guide rolls 2A, the elongated member 1 which is formed by 2C, has a 4C, the contact surface between the elongated member 1 for rolling rolls 4A guide rolls 2A, grooves 4B for accommodating the curved deformable portion that will be formed in the elongated member 1 is kicked set by 2C to.
[0013]
FIG. 2 shows a cross section of the guide rolls 2A, 2C and the compression device 3 in the AA section of FIG. 1, and the strip 1 deforms based on the bite of the projection 2D of the guide roll 2C , and the compression device 3 Buckling deformation occurs in the direction of the groove 2B of the guide roll 2A based on the compression in the direction of the arrow.
[0014]
FIG. 3 shows a cross section of the strip 1 formed by the guide rolls 2A and 2B and the compression device 3, and a curved deformed portion 1A based on plastic deformation of the strip 1 is formed.
[0015]
FIG. 4 shows a cross section of the rolling rolls 4A and 4C in the BB section of FIG. 1. The deformed portion 1A formed on the strip 1 is accommodated in a groove 4B formed on the rolling roll 4A and rolled.
[0016]
Hereinafter, the operation of the apparatus for manufacturing a profiled strip according to the present invention will be described.
[0017]
First, after rotating the guide rolls 2A, 2C and the rolling rolls 4A, 4C to adjust the peripheral speed of the rolls so that the feed speed of the strips 1 becomes equal, the strips 1 are inserted between the guide rolls 2A, 2C. And roll it. During this rolling, the strip material 1 is compressed in the sheet width direction by a compression device 3 provided near the guide rolls 2A and 2C to deform the strip material 1 into a curved shape, thereby forming a deformed portion 1A at a portion to be a thick plate portion. To form The strip 1 on which the deformed portion 1A is formed is inserted into rolling rolls 4A, 4C provided downstream of the guide rolls 2A, 2C and rolled. During this rolling, the deformed portion 1A of the strip 1 is rolled by the groove 4B provided in the rolling roll 4A.
[0018]
FIG. 5 shows the strip 1 rolled by the rolling rolls 4A, 4C, and the deformed portion 1A is rolled by the groove 4B to form the thick plate portion 1B. As a result, the imbalance with the working ratio of portions other than the groove 4B is eliminated.
[0019]
Further, by continuously performing the process of forming the deformed portion 1A on the strip 1 and the process of rolling the deformed portion 1A with the guide rolls 2A and 2C, the rolling process using the V-shaped die and the flat roll is 10 times or more. At the same speed as above, and a deformed cross section excellent in processing accuracy for both the thick plate portion and the thin plate portion can be obtained.
[0020]
In the above-described apparatus for manufacturing the irregularly shaped strip, the curved deformed portion 1A is formed in the thick plate portion of the strip 1 using the guide rolls 2A and 2C. The guide shoe may be arranged at a predetermined interval according to the thickness of the strip 1, and the strip 1 may be passed between the guide shoes to form the deformed portion 1A based on the unevenness.
[0021]
Further, the deformed portion 1A formed by the guide rolls 2A and 2C is not limited to a curved shape, and may be deformed so that the material supply amount in a portion to be a thick plate portion becomes large. At this time, depending on the shape, a trace of a contact portion between the materials deformed by the guide rolls 2A and 2C may occur. Such when improved adhesion of the material by rolling as working ratio in the groove 4B of the rolling roll 4A with using the strip material 1 made of soft material is about 40%, as a result, contact The occurrence of a trace can be prevented.
[0022]
【The invention's effect】
As described above, according to the apparatus for manufacturing a deformed cross-section strip of the present invention, the first deforming means for forming the preformed portion of the material supply amount according to the shape after rolling based on plastic deformation, and the preformed portion Since the second deforming means for forming the thick plate portion and the thin plate portion with the predetermined working degree by rolling is provided, the working speed can be increased and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a device for producing a deformed cross-section strip according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a guide roll and a compression device taken along a line AA in FIG. FIG. 4 is a cross-sectional view of a roll formed in a section taken along line BB of FIG. 1; FIG. 5 is a cross-sectional view of a roll formed by a roll; Cross-sectional view of strip [Fig. 7] Cross-sectional view of conventional deformed strip [Explanation of reference numerals]
1, strip material 1A, deformed portion 1B, thick plate portion 2A, guide roll 2B, groove 2C, guide roll 2D, projection 3, compression device 4A, rolling roll 4B, groove 4C, rolling roll 5A, thick plate portion 5B, thin plate Part 6A, thick part 6B, thin part

Claims (1)

In a device for producing a deformed cross-section strip by rolling a plate-shaped strip with a rolling roll to form a deformed cross-section strip, a first forming step of forming a preformed portion having a material supply amount according to a shape after rolling based on plastic deformation. the modification means, and rolling the preformed portions have a second deformation means for forming a thick plate portion and the thin plate portion of a given degree of processing,
The first deforming means includes a pair of guide rolls or guide shoes for continuously deforming a part of the strip material in a plate width direction in a longitudinal direction of the strip material, and a pair of guide rolls or guide shoes provided near the guide rolls or the guide shoes. And a compression device for applying an external force to the strip material in a width direction of the strip material .

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