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Production method of multi-gauge strips

A simultaneous manufacturing and stripping technology, applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve the problems of unused, poor competitiveness, etc.

Inactive Publication Date: 2012-11-14
金忠烈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are not currently used due to poor competitiveness

Method used

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  • Production method of multi-gauge strips
  • Production method of multi-gauge strips
  • Production method of multi-gauge strips

Examples

Experimental program
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Effect test

example 1

[0047] A first embodiment of the method of manufacturing multi-thickness strips according to the invention comprises the steps of: forming the strip-shaped material (10) into a processed strip (20), in which A thick portion (21) is formed at the center portion in the direction, and a groove (concave) (22) is formed at each end of the lower side; and the processed strip (20) is formed into a multi-thickness strip (30) , the multi-thickness strip (30) is formed with a thin portion (32) on each side of the thick portion (31) at the center, as Figure 7 and Figure 8 shown in .

[0048] Here, the shape of the groove ( 22 ) is not particularly limited, and may include a curved groove, such as a circular or elliptical type or a trapezoid.

[0049] The processed strip (20) is formed by a first lower roller (101) having at least one protrusion (101) at each side end in the width direction and a first upper roller having a flat surface (not shown) and the multi-thickness band (30) i...

example 2

[0056] In the method described in this second example of the invention, when forming the processed strip (20) into a multi-thickness strip (30) in the above example one, the upper side at the center of the thick portion (31) is formed There is a square recessed area (33), resulting in Figure 9 The W-shaped multi-thickness strip (30) shown in.

[0057] In this method, an upper punch having a groove (241) forming a square protrusion (242) at the center of the lower side may be used as an upper punch (240) for forming a W-shaped multi-thickness band (30). In this method, the pressure inside the groove (241) increases as the volume of the square protrusion (242) increases compared to the case where only the groove (241) is formed in the upper punch (240), however, forming The space on the underside of the processed strip (20) increases the flexibility of the material. Therefore, high pressure is not required, and forming can be performed without restriction on ejection and tran...

example 3

[0059] Example three of the invention depicts a method comprising the steps of forming the strip material into a processed strip (40), wherein the processed strip (40) has a plurality of grooves (42) on its underside, and having thick portions (41) between the grooves; and by forming the grooves in the inner portion of the processed strip (40) as thin portions and then simultaneously forming the grooves at each end as thin Section, the step of forming the processed strip (40) into a multi-thickness strip (50) comprising a plurality of thick sections (51) and thin sections (52) between the thick sections, as Figure 10 shown in .

[0060] In this method, when forming the processed strip (40) into a multi-thickness strip (50), preferably, the groove at the center of the processed strip (40) and the peripheral groove are sequentially Shaping takes place, and finally grooves at the edges of the processed strip (40) are formed as thin sections. In this case, the groove may be for...

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Abstract

The present invention provides a method of producing a multi-gauge strip which has a thick portion and a thin portion which are continuously disposed along its length. The method of producing multi-gauge strips consisting of a relatively thick portion and a relatively thin portion formed along the widthwise direction while continuously transferring a strip material, is characterized by comprisingthe steps of: primarily forming a strip material by pressing the upper side thereof so as to make a groove in the lower side of the part where a thin portion is to be formed; and secondly forming theresulted strip by pressing the upper side of the primarily formed strip so as to form the part having a groove into a thin portion and the other part into a thick portion.

Description

technical field [0001] The present invention relates to a method for manufacturing multi-gaugestrip (MGS) mainly used as semiconductor lead frame material. The multi-thickness belt refers to a belt-shaped member including thick parts and thin parts arranged continuously along the length direction. The present invention relates to a method of manufacturing multi-thickness strips by using universal rolls or presses. Background technique [0002] The multi-thickness tape is a member used for a lead frame that supplies power to semiconductor components requiring large capacitance or to electric or electronic components while supporting the components. For example, lead frames are used to supply power to heat-generating components such as power transistors or connectors, and to smoothly dissipate heat generated from these components. Multi-thickness ribbons are generally manufactured by forming thick and thin sections in a strip made of copper and copper alloys, where the thin ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D5/06B21C1/16
CPCH01L2924/0002H01L2924/00H01L23/48
Inventor 金忠烈
Owner 金忠烈
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