JPH0824980A - Device for producing deformed cross sectional plate for clad base material - Google Patents

Abstract

PURPOSE:To easily and continuously produce a clad base material having good dimensional accuracy of the thick part and to exactly form the depth size of a groove even in the case of being small step difference. CONSTITUTION:Projecting edges 10 along both side ends of a long metal material 3 are arranged on the plate surface 2a of a plate-like metallic mold 2 abutted on the long metal material. A pressing roll 4 is rolled while bringing into contact with the surfaces of the projecting edges to form the groove forming projections 9 which have lower height from the plate surface than the projecting edges 10 and an inclined sloping surface at the tip part and also, become narrower width toward the tip part between the projecting edges of the metallic mold. By this constitution, the pressing roll 4 is regulated to the shifting in the width direction of the material without the upper and the lower parts in the width direction of the long metal material 3. Therefore, the clad base material having good thickness accuracy without uneven thickness, can continuously be produced, and even in the case of forming the small step difference, the exact groove form can be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a clad base material such as a 42 alloy-aluminum clad material used as a material for a lead frame for an integrated circuit.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture this type of clad material, a clad base material b having a groove a as shown in FIG. 1 is manufactured, and then a filler c is placed in the groove a as shown in FIG. It is generally performed by press-fitting, and in order to form the groove a of the clad base material b, a method by cutting or a die device d as shown in FIG. 3 is used for rolling. The rolling method of forming or a method of using both methods together is adopted.
When the clad base material b is manufactured by using the cutting method, not only is there a waste of cutting a part of the material into chips, but the bottom surface of the groove a is relatively thin and the width thereof is relatively wide. It cannot be easily manufactured, and the bottom surface lacks smoothness, resulting in poor plate thickness accuracy. This inconvenience can be eliminated by using the rolling method using the die device d. This rolling method is disclosed in Japanese Examined Patent Publication No. 52-36512, in which a long metal material g is brought into contact with a plate surface f of a mold e having a forming part i as shown in FIGS. 3 and 4. When the pressing roll h is rolled within the range of the plate surface f and each time the rolling is completed, the long metal material g is moved by a moving means j such as a clamp for a predetermined distance, the long metal The material g can be molded into a clad base material b having a groove a as shown in FIG. 1, for example, without wasting the material.

[0003]

In the clad base material b manufactured by the above rolling method, the thickness accuracy of the thin portion is good, but the accuracy of the thick portion k is not sufficient as shown in FIG. Further, there is a drawback that the dimensional accuracy of the groove is difficult to be obtained when there is little step difference between the thin portion 1 and the thick portion k. Specifically, the plate thickness of a portion m of the thick portion k near the groove a becomes thick, and the edge down occurs near the end face n of the plate width, which tends to make thin, and the dimensional accuracy of the thick portion k is sufficient. In addition, if the number of steps is small, there is a drawback that the depth of the groove cannot be accurately measured.

The present invention provides an apparatus for easily and continuously producing a clad base material having an accurate dimensional accuracy of a thick portion, and a clad base material capable of accurately producing a groove depth dimension even if a step is small. It is an object of the present invention to provide a manufacturing apparatus of.

[0005]

According to the present invention, a plate-shaped mold against which a long metal material is abutted, and a range of the plate surface is rolled by rolling along the plate surface of the mold. An apparatus comprising a pressing roll for pressing a lengthy metal material against the plate surface, and a moving means for intermittently moving the lengthy metal strip material in the lengthwise direction by a fixed distance each time the pressing rolling is completed. Providing projection edges on both sides of the elongated metal material on the plate surface of the mold, the pressing roll rolling in contact with the projection edges, and the projections between the projection edges of the mold. The above-mentioned object is achieved by providing a groove forming projection that is lower in height from the plate surface than the edge, has a sloped surface at which the tip is inclined toward the plate surface, and gradually narrows toward the tip. I did it. You may make it form in an inclined surface in the side surface of this groove forming protrusion.

[0006]

It is possible to bring a long metal material into contact with a plate-shaped die, to roll the pressure roll along the plate surface, and to move the metal material by a certain distance each time the pressure rolling is completed. Repeatedly, grooves corresponding to the groove forming projections on the plate surface of the mold are gradually formed in the metal material, and the clad base material is manufactured. Although such an action is not particularly different from the conventional case, in the present invention, the plate surface of the mold is provided with the projecting edges along both ends of the elongated metal material, and the projecting edges are provided on the projecting edges. Since the pressure roll rolls along, the pressure roll does not incline in the plate width direction of the metal material, and the edge down does not occur in the metal material to be molded, and the pressure roll is formed between the protrusion edges. A groove is gradually formed due to the groove forming projection whose tip is lower than the height of the protrusion edge from the plate surface and which is inclined toward the plate surface and has a narrow width. Since both projection edges regulate, only the thick part near the groove does not become thick, and the shape of the groove does not collapse due to excessive material flow, so that the thick part can be formed to an accurate thickness and the groove is shallow Even if the number is small, a groove with good dimensional accuracy can be formed.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 6 and FIG. 7, reference numeral 1 denotes a plate-shaped mold 2 and a long metal material 3 such as 42 alloy which is in contact with the plate-shaped mold 2.
A pressing roll 4 that rolls and presses the range of the plate surface 2a along the plate surface 2a, and the metal material 3 is moved a predetermined distance behind the mold 2 every time the rolling of the pressing roll 4 is completed. 1 shows a clad base material manufacturing apparatus including a moving means 5 for moving the clad base material to a clad base material.

The illustrated apparatus 1 is an embodiment in which a clad base material 8 having two grooves 7 for filling two threads of the filler 6 as shown in FIG. 11 is manufactured, As shown in FIGS. 8 and 9, two groove forming projections 9, 9 extending in the length direction of the elongated metal material 3 are formed at intervals on the plate surface 2a of the plate-shaped mold 2. At the same time, projecting edges 10 and 10 were formed along both ends of the elongated metal material 3. Each groove forming projection 9
Has a lower height from the plate surface 2a than the protrusion edge 10, and as shown in FIG. 9, is inclined toward the plate surface 2a at the tip 9a, that is, the end portion on the moving rear side of the elongated metal member 3. Slope 11
In addition, in the illustrated example, the side surface of the protruding edge 10 is made to stand upright at 90 ° from the plate surface 2a, and the tip 9a of the groove forming projection 9 has a surface 12 on the protruding edge 10 side.
Was cut to form a gradually narrowed tip, and the side surface 9b of the groove forming projection 9 was inclined with respect to the plate surface 2a.

The operation of the illustrated embodiment will be described. The mold 2
Long metal material 3 prepared by winding the plate surface 2a in a roll shape
Are brought into contact with each other, the pressing roll 4 is pressed and rolled along the plate surface 2a, and the metal material 3 is fixed by a moving device 5 such as a clamp or a winding device of the metal material each time the pressing rolling is completed. By repeating the distance movement, grooves are gradually formed in the metal material 3 by the groove forming projections 9 of the mold 2, and the clad base material 8 having the grooves 7 and 7 is manufactured. The pressing roll 4 is a mold 2
Since it rolls in contact with the upper edges of the projecting edges 10 and 10 formed in the above, it does not move up and down in the plate width direction of the metal material 3 and edge down does not occur. In addition, the tip 9 of the groove forming projection 9
Since a has an inclined surface 11 and the tip 9a is formed to have a gradually narrower width, a part of the material of the metal material 3 gradually moves in the plate width direction, and an accurate groove shape can be formed. Because of this, the movement of the material in the plate width direction is limited, so that there is no reduction in plate thickness and the accuracy of the plate thickness of the thick portion is improved. Even if the height of the groove forming projection 9 is low and the step is small, the flow of the material in the width direction is restricted, so that the groove shape is accurate.

The long metal material 3 has a width of 75 mm and a thickness of 0.44 mm
42 alloy having a rectangular cross section of 75.3 mm in width, and on both sides of the plate surface 2a having a width of 75.3 mm, the projection edges 10 and 10 having a height from the plate surface 2a of 0.36 mm and a total thickness of 20 mm, and having a width of 50 mm Width 6.0 mm, height 0.01 mm, tip 9a, with a space between protrusions
Has an angle of 0.1 °, a width of the tip 9a is narrowed to 5.7 mm, and has two groove forming projections 9 with a width of 120 mm and a length of 28.
It is brought into contact with a die 2 of 0 mm, and each time the rolling of the pressing roll 4 is completed, the elongated metal material 3 is moved by 3.0 mm by the moving means 5 to the plate surface 2.
The clad base material 8 was manufactured by moving to the rear of a. The cross-sectional shape of the formed groove was substantially the same as that of the groove forming projection 9, and a clad base material having a thick portion with a uniform thickness was obtained.

[0011]

As described above, according to the present invention, protrusion edges are provided on both sides of the plate surface of a mold with which a long metal material is abutted, on which a pressing roll comes into contact and roll. Since the height of the pressing roll is smaller than that of this, and the groove forming projections whose tip is inclined and the width is gradually narrowed toward the tip, the upper and lower sides in the width direction of the long metal material of the pressing roll are provided. The movement of the material in the width direction is also regulated, and the clad base material with good plate thickness accuracy without edge down or uneven thickness of the thick part can be continuously manufactured, and the tip of the groove forming protrusion is inclined to narrow the width. Therefore, even if the step is small, the material of the metal material is gradually moved in the plate width direction, so that an accurate groove shape can be formed.

[Brief description of drawings]

FIG. 1 is a perspective view of a clad base material.

FIG. 2 is a perspective view of a clad material

FIG. 3 is an explanatory view of a conventional mold device.

FIG. 4 is a perspective view of the mold shown in FIG.

FIG. 5 is an enlarged sectional view of a conventional clad base material.

FIG. 6 is a perspective view of an essential part of an embodiment of the present invention.

7 is a side view of FIG.

8 is a front perspective view of the mold of FIG.

9 is a sectional view taken along line 9-9 of FIG.

10 is a sectional view taken along line 10-10 of FIG.

FIG. 11 is a sectional view of the clad material.

[Explanation of symbols]

2 Mold 2a Plate surface
3 Long metal material 4 Pressing roll 5 Moving means
7 Groove 8 Cladding base material 9 Groove forming protrusion 1
0 Projection edge 11 Slope

Claims (2)

[Claims] 1. A plate-shaped mold against which a long metal material is brought into contact,
A pressing roll that rolls in the range of the plate surface along the plate surface of the mold to press the long metal material against the plate surface, and the long metal strip material at each completion of the pressure rolling. In a device provided with a moving means for intermittently moving a fixed distance in the length direction, a plate edge of the mold is provided with protrusion edges along both side ends of the elongated metal material,
The pressing roll rolls in contact with the projection edge, and the height between the projection edge of the mold is lower than the projection edge and the tip has an inclined surface inclined to the plate surface. At the same time, an apparatus for manufacturing a modified cross-section plate for a clad base material, characterized in that a groove-forming projection whose width is gradually narrowed toward the tip thereof is provided. 2. The apparatus for manufacturing a modified cross-section plate for a clad base material according to claim 1, wherein a side surface of the groove forming projection is formed as an inclined surface.