KR20090034003A - Production method of multi gauge strip - Google Patents

Production method of multi gauge strip Download PDF

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Publication number
KR20090034003A
KR20090034003A KR1020070099118A KR20070099118A KR20090034003A KR 20090034003 A KR20090034003 A KR 20090034003A KR 1020070099118 A KR1020070099118 A KR 1020070099118A KR 20070099118 A KR20070099118 A KR 20070099118A KR 20090034003 A KR20090034003 A KR 20090034003A
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South Korea
Prior art keywords
strip
thin
molding
roll
projection
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KR1020070099118A
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Korean (ko)
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KR100903266B1 (en
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김충열
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김충열
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Priority to KR1020070099118A priority Critical patent/KR100903266B1/en
Priority to PCT/KR2007/005838 priority patent/WO2008062992A1/en
Priority to JP2009537090A priority patent/JP2010510066A/en
Priority to CN2007800430690A priority patent/CN101563175B/en
Priority to US12/514,583 priority patent/US20100031727A1/en
Priority to TW097137003A priority patent/TWI407517B/en
Publication of KR20090034003A publication Critical patent/KR20090034003A/en
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Publication of KR100903266B1 publication Critical patent/KR100903266B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A manufacturing method of the multi shape strip is provided that the inferiority rate can be reduced and the productivity can be improved. A manufacturing method of the multi shape strip comprises the steps of: a step molding strip including the thick part in the thin part forming the bump type groove on the material strip low surface amount outer side and center; and a step molding a strip(30) including the thin portion of the balance in the strip upper side and rear part. The multi shape strip includes a top roll of the balance in the front side, a counterpoise(5) in central part and a bottom roll(51) having a projection(1) in both outer sides. The projection includes a first slope(2), and a counterpoise(3) and a second slope(4).

Description

이형스트립의 제조방법{Production Method of Multi Gauge Strip}Production Method of Multi Gauge Strip

본 발명은 반도체용 리드후레임(Lead Frame)재 이형스트립의 제조방법에 관한 것으로, 보다 상세 하게는 범용의 압연기 또는 프레스기를 이용하여 스트립 폭방향에 길이를 따라 후부와 박부를 형성시킬 수 있도록 하는 이형스트립 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a lead frame material release strip for semiconductors, and more particularly, to release a rear part and a thin part along a length in a strip width direction using a general-purpose rolling mill or a press machine. The present invention relates to a strip manufacturing method.

이형스트립은 전기용량이 큰 반도체부품 파워트렌지스터(Power Transistor)의 발생열을 방출시키기 위해 동 및 동합금 스트립에 후부와 박부를 형성시켜 후부는 열방출 기능을 갖고 박부는 리드로 사용하며, 그 외 전기(자)부품인 콘넥터(Connector)등에 사용하고 있다.The release strip forms rear and thin parts on copper and copper alloy strips to release generated heat from power transistors with large capacitance. The rear part has heat dissipation function and thin parts are used as leads. I) It is used for connector, which is a part.

이형 스트립 박부두께는 후부두께의 30%정도로 구성되여 통상의 압연방법으로는 박부의 길이가 길어져 성형이 불가하므로 스트립 폭방향으로 소재두께를 전신시키여 박부를 성형하는 여러방식들이 고안되어 적용되고 있다.The release strip thin part is composed of about 30% of the thickness of the rear part. Since the length of the thin part cannot be formed by the usual rolling method, various methods of forming the thin part by transferring the material thickness in the strip width direction have been devised and applied. .

그 예로 소재두께를 스칼핑(Scalping)하여 박부를 형성시키는 방식, 후부양외측에 박부소재를 용접하는 방식등이 적용되였으나, 경쟁력이 낮아 현재는 정용되지 않으며 소재두께를 폭방향으로 전신시키는 방식들이 주로 적용되고 있다.For example, the method of forming the thin part by scalping the material thickness and the method of welding the thin part material on the outside of the rear part have been applied.However, due to its low competitiveness, the method of transferring the material thickness in the width direction is not used. Mainly applied.

그 중 가장 많이 적용되고 있는것으로 알려진 도1a의 브이밀(V-Mill)이라 불리는 방법은 다이스 상면 중앙에 凹홈(2)을 형성하고 凹홈 좌우로 경사면(3)을 형성하고 경사면은 예각부(1)에서 점차 넓어져 V자 형상을 갖었다.The most widely applied method, called V-Mill of FIG. 1A, forms a groove 2 in the center of an upper surface of the die and forms an inclined surface 3 to the left and right of the groove. It gradually widened in (1) and had a V shape.

소재 스트립은 凹홈(2)상단직각부(4)에서 절단되며 凹홈내로 삽입되여, 도1b의 후부(2')로 성형되고 후부좌우측은 절단면(4')이 예각부(1')에서 좌우측으로 경사면(3')을 갖은 형상으로 성형된다.The raw material strip is cut in the upper right angle portion 4 of the groove 2 and is inserted into the groove, shaped into the rear portion 2 'of FIG. 1B, and the rear left and right sides have a cutting surface 4' at the acute angle 1 '. It is molded into a shape having an inclined surface 3 'on the left and right sides.

상기 과정이 진행되며 경사면(3')은 점차 넓어진 다이스의 평면부(5)에 의해 박부(5')로 성형된다.As the above process proceeds, the inclined surface 3 'is formed into a thin portion 5' by the flat portion 5 of the gradually widened die.

위 방법은 다이스위의 소재스트립을 성형롤(도시생략)이 소재진행 방향으로 왕복 운동을 하며 성형하였으나, 소재진행방향 좌우측으로 왕복운동을 하는것과 소재상면을 고속으로 햄머링(Hammering)을 하는 것 또는 다이스를 롤(Roll)형상으로 변경한 것 등 다양하게 활용하고 있다.In the above method, the forming strip (not shown) is formed by reciprocating the material strip on the die in the direction of material progress, but reciprocating in the direction of the material direction in the material direction and hammering the upper surface of the material at high speed. Or the die is changed into the roll shape, etc., and it is utilized variously.

그러나 성형롤이 왕복운동을 하며 가압이 이루어져야 하고 행정중 1회는 무부하상태가 되어야 하므로 속도와 가압력의 제약으로 생산속도가 낮고, 다이스형상이 V자형 경사면을 갖고 있어서 제작 및 보수유지가 용이치 않으며 예각부(1)의 형상은 가압력에 취약한 문제등의 단점을 갖고 있다.However, since the forming roll must be reciprocated and pressurized and once in the stroke, it should be unloaded, so the production speed is low due to the limitation of the speed and the pressing force, and the die shape has a V-shaped slope, making it difficult to manufacture and maintain. The shape of the acute angle part 1 has disadvantages, such as a problem which is vulnerable to a pressing force.

특히 2개의 후부를 갖인 W형일 경우는 凹홈내에 돌기(6)체적만큼 가압력이 높아지고, 이로인해 높은 이젝팅(Ejecting)력을 필요로 하므로 소재이송은 물론 성형 자체에 제약을 갖게한다.Particularly, in the case of the W type having two rear parts, the pressing force increases as much as the volume of the protrusion 6 in the groove, and thus requires a high ejecting force, thereby limiting the material transfer as well as the molding itself.

다른 일례로 엠지알(MGR:Multi Grooved Roll)방식이라고 불리는 도2의 방법 은 凹,凸홈을 갖인 상하롤(20,21)과 평형의 상하롤(22,23)을 교번하여 다수단(6단)의 압연롤을 탠덤(Tandem)배열한 것이다.In another example, the method of FIG. 2, which is called a multi-grooved roll (MGR) method, alternates the upper and lower rolls 20 and 21 having the grooves and the grooves with the upper and lower rolls 22 and 23 of the equilibrium. However, the rolling roll of Tan) is arranged in tandem.

위 방법은 상하롤(20,21)이 소재 양측부를 가압하여 굴곡부(1)와 박부(2)를 성형한 후 이것을 상하롤(22,23)이 평면형으로 교정(3)하는 과정을 반복하면서 박부(2)를 좌우내측으로 넓혀 박부(4)를 성형하도록 한 것이다.In the above method, the upper and lower rolls 20 and 21 press both sides of the material to form the bent portion 1 and the thin portion 2, and then repeat the process of straightening the upper and lower rolls 22 and 23 to the planar shape (3). (2) is widened to the left and right inward to form the thin portion (4).

위 과정에서 박부폭을 넓게 성형하면 박부에 파형(Wave)이 발생되고 좁히면 凹凸홈을 갖인 상하롤(20,21)의 숫자가 많아져 공구비비중이 높아지므로, 파형방지를 위해 평형의 상하롤(22,23)로 교정과정을 거쳐 후부길이를 박부길이와 같게 하는 것이다.In the above process, if the width of the thin part is formed, a wave is generated in the thin part, and if the width is narrowed, the number of upper and lower rolls 20 and 21 having a groove is increased, thereby increasing the tool specific gravity. After the calibration process with the rolls 22 and 23, the rear length is equal to the thin length.

또 다른예로 도3의 도시방법은 상기 엠지알방법과 같이 다수단(5단)의 상하롤을 텐덤배열하여 凹홈(2)과 그 좌우측에 평면부(1)와 경사부(3)를 형성한 상롤(30)과 평형의 하롤(도시생략)을 구비한것이다.As another example, the method shown in Fig. 3 is a tandem arrangement of the upper and lower rolls of a plurality of stages (five stages), as in the method of the MG method, so that the flat groove 1 and the inclined portion 3 on the left and right sides thereof. The formed upper roll 30 and the equilibrium lower roll (not shown) are provided.

상롤(30)은 소재중앙부를 凹홈(2)내에 삽입시키면서 후부(2')를 성형하며 동시에 평면부(1)와 경사부(3)는 박부(1')와 그 양외측에 경사부(3')를 성형하고, 다음 각단의 상하롤은 상기와 동일과정으로 박부(1")폭을 넓히도록 한 것이다.The upper roll 30 forms the rear portion 2 'while inserting the center portion of the material into the groove 2, and at the same time, the flat portion 1 and the inclined portion 3 are inclined portions on the thin portion 1' and on both sides thereof. 3 ') was formed, and the upper and lower rolls of the next stage were to widen the thin portion 1 "in the same process as above.

이때 성형롤 숫자를 줄이기위해 박부폭을 넓히면 도2의 경우와 동일 결과를 갖게 되므로 박부폭 양외측에 경사부(3')를 갖게하고, 성형과정중 도2의 경우와 같이 평형의 상하롤(도시생략)로 교정과정을 거치게 한것이다.At this time, if the thin width is reduced to reduce the number of forming rolls, the same result as in the case of FIG. 2 is obtained, so that the inclined portion 3 'is provided on both sides of the thin width, and the upper and lower rolls of the equilibrium as in the case of FIG. (Not shown).

즉, 도2의 경우는 도4의 단면a도와 같이 소재스트립(1)을 형상2와 3과 형상4를 거쳐 소재폭 외측에서 내측으로 성형을 반복하며, 도3의 경우는 도4의 단면b도 와 같이 소재중앙 외측으로 형상2와 3과 형상4의 형상을 거치며 후부와 박부가 성형되도록 한 것이다.That is, in FIG. 2, the material strip 1 is repeatedly formed from the outside of the material width to the inside through the shapes 2, 3, and 4 in the case of FIG. 4, and in the case of FIG. As shown through the shape of the shape 2 and 3 and the shape 4 to the outside of the center of the material is to be molded to the rear and thin.

그러므로 상기 도2의 도3의 2방법은 성형롤의 소요가 많아 공구비 비중이 높고, 각롤을 통과하며 후부폭 위치를 유지시켜야만 하므로 속도에 제약이 따르며, 후부 양외측을 반복가압하여야 하므로, 발생되는 분말은 불량품의 원인이 된다.Therefore, the method of FIG. 2 of FIG. 2 of FIG. 2 has a high tool cost ratio due to a large amount of forming rolls, and has to maintain the rear width position after passing through each roll. Therefore, the speed is limited, and both sides of the rear portion must be repeatedly pressed. The powder which becomes becomes a cause of defective products.

또 각각의 상하롤을 통과하며 후부와 박부의 두께가 점차 감소되므로, 이 감소분은 길이를 증가 시키기 때문에 탠덤배열한 각롤은 증속기능을 필요로 하며, 또 재질을 점차 경화시키기 때문에 대형의 전용설비를 필요로 한다.In addition, since the thickness of the rear part and thin part passes gradually through each upper and lower rolls, this decrease increases the length, so each roll of tandem requires a speed-up function, and the material is gradually hardened. in need.

또 후부성형은 성형공구凹홈 내를 수회 반복 성형하므로 복수개 이상의 후부와 박부를 갖인 형상 성형에는 구조적으로 제약을 갖는 공통점을 갖고 있다.In addition, since post-molding repeatedly forms the inside of a molding tool groove, the shape molding having a plurality of rear parts and thin parts has structural features in common.

종래 기술의 문헌정보Prior Art Literature Information

[문헌1]US특허 4,523,364 1985.06.18 Olin co.[Patent 1] US Patent 4,523,364 1985.06.18 Olin co.

[문헌2]US특허 4,458,413 1984.07.10 Olinco.[Patent 2] US Patent 4,458,413 1984.07.10 Olinco.

[문헌3]JP특허 36512 1977.09.16 Kawai co.[Patent 3] JP Patent 36512 1977.09.16 Kawai co.

[문헌4]JP특허 135731 1985.08.12 France Griset co.[Patent 4] JP Patent 135731 1985.08.12 France Griset co.

[문헌5]JP특허 13638 1988.01.20 옥천(玉川)기계(Mitubishi)[Patent 5] JP Patent 13638 1988.01.20 Okcheon machine (Mitubishi)

[문헌6]JP특허 182339 1990.07.17 Kobe steel co.[Document 6] JP Patent 182339 1990.07.17 Kobe steel co.

[문헌7]US특허 4,578,979 1986.04.01 Hitachi cable Ltd.[Patent 7] US Patent 4,578,979 1986.04.01 Hitachi cable Ltd.

[문헌8]US특허 5,890,389 1999.04.06 Hitachi cable Ltd.[Patent 8] US Patent 5,890, 389 1999.04.06 Hitachi cable Ltd.

본 발명은 소재스트립 하면에 凹홈을 갖인 박부를 성형하여 하롤상에서 공간을 갖게 하고, 상기 공간은 스트립 상면에 후부와 박부성형시 폭방향 전신율을 높혀, 후부와 박부의 길이방향 연신율(량)이 동조를 하며 후·박부 성형이 이루어지는 이형스트립의 제조방법을 제공하는데 그 목적이 있다.The present invention is to form a thin portion having a groove in the lower surface of the strip material to have a space on the lower roll, the space increases the widthwise whole body ratio during the rear portion and thin portion forming on the upper surface of the strip, the longitudinal elongation of the rear portion and thin portion (amount) It is an object of the present invention to provide a method for producing a release strip in which post-thin molding is performed with this tuning.

본 발명은 상하성형공구 사이를 이송하는 소재스트립에 후부와 박부를 성형하는 이형스트립의 제조방법에 있어서, 전면에는 평형의 상롤과 좌우측에 돌기를 형성한 하롤을 상하로 구비하고, 후면에는 凹홈을 갖인 상롤과 평형의 하롤을 상하로 구비한 상기 전후면 상하롤은 소재스트립을 가압하여 전면 상하롤은 소재스트립 양외측 하면에 돌기형 凹홈을 갖인 박부 성형과 동시에 중앙에 후부를 성형하고, 후면상하롤은 상기스트립의 돌기형 凹홈의 박부상면을 평형의 박부로 성형함과 동시에 후부성형이 이루어 지는 것을 특징으로 한다.The present invention provides a method for manufacturing a release strip for forming a rear portion and a thin portion on a material strip for transferring between up and down molding tools, the front surface of which has a flat upper roll and a lower roll having protrusions formed on the left and right sides thereof, The front and rear upper and lower rolls having the upper and lower rolls of the equilibrium up and down with the upper and lower rolls pressurize the material strip, and the front upper and lower rolls form the rear part at the same time as the thin part molding having the projection-shaped grooves on both outer and lower surfaces of the material strip. The rear upper and lower rolls are formed at the same time as forming the thin upper surface of the protruding groove of the strip into a thin thin portion and at the same time the rear molding is made.

또한, 본 발명에 따른 전면과 후면의 상하롤을 프레스기의 다이셋트 상형과 하형의 펀치와 다이스로 하여 소재스트립에 후부와 박부가 성형되는 것을 특징으로 한다.In addition, the rear and thin parts are formed on the material strip by using the upper and lower rolls of the front and rear surfaces according to the present invention as the punch and die of the die set upper and lower dies of the press.

본 발명은 범용의 저가설비로 투자비와 소수의 공구적용으로 제조비 절감과, 동일위치 중복(반복)성형을 생략하여 불량율을 줄이고, 생산성(속도)을 높이며, 형상성형에 제약이 없는 등의 장점을 갖었다.The present invention is a general-purpose low-cost equipment to reduce the investment cost and the application of a small number of tools, to reduce the defect rate by eliminating duplicate (repeat) molding in the same position, increase the productivity (speed), there is no restriction on the shape molding, etc. Got it.

본 발명은 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings.

도5는 성형설비의 개념도로서 소재스트립(10)이송방향 전면과 후면에 각각 상하롤이 구비되여 이송하는 소재스트립 폭방향에 박부(6')와 후부(7')를 갖인 이형스트립(30)으로 성형하는 과정을 보여준다.5 is a conceptual view of a molding facility, the release strip 30 having a thin portion 6 'and a rear portion 7' in the material strip width direction for transporting the material strip 10 provided with upper and lower rolls on the front and rear surfaces of the material strip 10. Shows the process of molding.

전면에는 평형의 상롤(50,도시생략)과 중앙부에 평형부(5)와 그 양외측에 돌기부(1)를 갖인 하롤(51)이 상하로 구비되고, 돌기부(1)는 평형부(5)양외측으로 경사부(2), 평형부(3)와 경사부(4)가 각각 직선으로 연결되여 돌출되여 있다.The front surface is provided with a flat upper roll 50 (not shown) and a lower roll 51 having a balance portion 5 at the center portion and a projection portion 1 on both sides thereof, and the protrusion portion 1 has a balance portion 5. The inclined portion 2, the balance portion 3, and the inclined portion 4 are connected to each other in a straight line to protrude from both sides.

후면에는 중앙에 凹홈(7)과 그 양외측에 평형부(6)를 갖인 상롤(52)과 평형의 하롤(53도시생략)이 상하로 구비되였다.On the rear, an upper roll 52 having a wedge 7 in the center and an equilibrium 6 on both sides thereof and a lower roll of equilibrium (not shown 53) were provided up and down.

상기와 같이 구비한 전면 상하롤은 소재스트립 하면에 후·박부(5',1'도6의 20)를 성형하고, 후면 상하롤은 후부와 박부가 성형된 상기 스트립의 상면을 가압하여, 스트립 상면에 후부(7')와 박부(6')를 성형하도록 구성된 것이다.The upper and lower rolls provided as described above form a rear thin part (20 ', 5' and 1 '6) on the lower surface of the material strip, and the rear upper and lower rolls press the upper surface of the strip formed with the rear part and the thin part, It is configured to mold the rear portion 7 'and the thin portion 6' on the upper surface.

도6은 상기의 성형과정별 형상 단면을 도시한 것이다.6 is a cross-sectional view illustrating the shape of each forming process.

상하롤(50,51)사이의 소재스트립(10)은 하롤(51)의 돌기(1)상에서 상롤(50)의 가압으로 하면에 돌기(1)형상의 凹홈을 갖으며 폭방향으로 전신되여 단부(10')를 갖으며, 후부(5')와 박부(1')를 갖인 스트립(20)으로 성형된다.The material strip 10 between the upper and lower rolls 50 and 51 has a concave groove in the shape of a protrusion 1 on the lower surface by pressurizing the upper roll 50 on the protrusion 1 of the lower roll 51 and is moved in the width direction. It is shaped into a strip 20 having an end 10 'and having a back 5' and a thin 1 '.

상기의 돌기 형상의 凹홈 성형은 상기와 같이 대칭의 경우뿐만 아니라 폭 중앙부에 1개일 경우 또는 복수개 이상을 균등배분하였을 경우에도 소재자체의 유동성에 의행 성형가능한 것이며, 또 상기와 같은 형상은 압연 뿐만 아니라 인발, 프 레스가압등 일반적인 성형방법으로도 가능한 것이다.The protrusion-shaped shaping grooves can be molded by the fluidity of the material itself, not only in the case of symmetry as described above, but also in the case of one in the center of the width or evenly distributed a plurality or more. It is also possible with general molding methods such as drawing and pressing.

상기에서 성형된 스트립(20)하면의 돌기형상의 凹홈은 후면의 하롤상에서 공간부(8)을 형성하게 된다.The protruding groove of the lower surface of the formed strip 20 forms a space 8 on the lower roll of the rear surface.

상기 공간부(8)는 상롤 凹홈(7)과 평형부(6)가 스트립(20) 상면에 후부(7')를 성형하는 동안 경사부(2')는 점진적으로 하롤(53)상면과 접면하며 폭방향으로 두께가 감소되여 박부(6')로 성형됨과 동시에 경사부(4')와 단부(10')를 전신시키여, 단부(20')와 후부(7')와 박부(6')를 갖는 스트립(30)으로 성형을 가능하게 하는 것이다.The space 8 is gradually inclined to the upper surface of the lower roll 53 while the upper roll chamfer 7 and the balance 6 form the rear portion 7 'on the upper surface of the strip 20. In contact with each other, the thickness decreases in the width direction to form a thin portion 6 ', and at the same time, the inclined portion 4' and the end portion 10 'are transferred to the end portion 20', the rear portion 7 'and the thin portion 6 It is possible to form into a strip 30 having a ').

즉, 상기경우는 소재의 동일위치를 반복가압(성형)하지 않으므로 높아지는 가공 경화를 피하고, 가압시 유동성을 높일 수 있는 공간을 형성하므로서, 박부가 폭방향으로 전신하며 동시에 연신되는 길이와 후부가 연신되는 길이가 동조 할 수 있는 단면형상을 구비하였기 때문에 가능한 것이다.That is, in the above case, since the same position of the material is not repeatedly pressurized (molding), avoiding work hardening and forming a space to increase fluidity when pressurizing, so that the thin portion is extended in the width direction and is stretched at the same time and the rear portion is stretched. This is possible because it has a cross-sectional shape that can be tuned in length.

또 박부폭이 넓을 경우는 공간을 형성한 경사부(2')를 예각을 갖게 하여 길게하고 비교적 좁은 경우는 각을 크게 하여 짧게 하는등 그 범위는 요구규격에 따라 후술할 공간의 형상과 위치를 임의 조정하므로서 가능하게 한다.If the width of the thin part is wide, the inclined part 2 'that forms the space is made to have an acute angle, and if it is relatively narrow, the length is shortened by increasing the angle. It is possible by adjusting arbitrarily.

또 전술한 성형과정을 프레스기를 이용하여 다이셋트의 상·하형으로 적용할 경우는 전면하롤의 돌기를 하형의 다이스에 형성시키고, 평형의 상롤은 상형의 펀치로하며, 후면의 상하롤도 상기와 같이 펀치와 다이스로 대체하여 이송되는 소재스트립을 순차가압하면 상하롤을 적용한 경우와 동일한 결과를 얻을 수 있슴을 알수 있다.(이하 상하롤과 펀치와 다이스는 동일한것으로 본다.)In addition, in the case of applying the above-mentioned forming process to the upper and lower dies of the die set by using a press machine, the projection of the front lower roll is formed on the die of the lower die, the upper roller of the equilibrium is the upper punch, and the upper and lower rolls of the rear side are also Likewise, if the material strip conveyed by replacing the punch and die is sequentially pressurized, the same result as the case of applying the upper and lower rolls can be obtained. (Hereinafter, the upper and lower rolls and the punch and dies are regarded as the same.)

상기 과정에서 적용한 돌기(1)는 경사부(2), 평면부(3)와 경사부(4)가 연결된 형상이지만 원호 및 타원호와 같은 곡면(이하'곡면'이라 통칭함)돌기를 적용할 수 있으며, 곡면돌기는 독자 또는 돌기(1)와 병용하여 소재의 유동성을 높일 수 있다.The protrusion 1 applied in the above process is a shape in which the inclined portion 2, the flat portion 3 and the inclined portion 4 are connected, but curved surfaces such as circular arcs and elliptical arcs (hereinafter referred to as 'curved surfaces') may be applied. The curved protrusion may be used in combination with the reader or the protrusion 1 to increase the fluidity of the material.

그 예로 도7에서와 같이 소재 스트립하면 양외측에 전술한 과정과 같이 곡면(71)돌기를 성형하고 2개의 凹홈(72)부로 가압하여 2개의 후부와 박부를 갖인 스트립(70,W형)으로 성형하는 것을 보여준다.For example, as shown in FIG. 7, when the material strip is formed, the curved surface 71 protrusions are formed on both sides and pressurized into two grooves 72 to have two rear and thin strips 70 and W. Shows molding with

상기의 경우는 凹홈(72)이 1개일경우보다 각형돌기(73)의 체적만큼 凹홈(72)내 압력이 증가하게 되지만 스트립하면에 형성한 곡면(71,공간)이 전술한 과정과 같이 소재유동성을 증가시키므로, 높은 가압력이 불요하여 소재 이젝팅(Ejecting)과 이송에 제약을 주지 않고 성형을 할 수 있는 것이다.In the above case, the pressure in the groove 72 increases as much as the volume of the square projection 73 than when the groove 72 is one, but the curved surface 71 (space) formed on the lower surface of the strip is formed as described above. Since it increases the material flowability, high pressing force is not required, and thus molding can be performed without restricting the material ejecting and conveying.

상기에서 적용한 곡면돌기와 돌기는 각각 독자로 또는 병용하여도 동일한 결과를 얻을 수 있으며 제품규격에 따라 임의의 위치에 적용할 수 있슴을 알 수 있다.The curved projections and the projections applied in the above can obtain the same result even if they are used alone or in combination, and it can be seen that they can be applied at any position according to the product specifications.

상기와 같은 과정을 응용하여 후부와 박부를 각각 복수개 이상 형성한 이형스트립의 경우는 도8에서와 같이 소재스트립하면에 곡면(81)돌기 형상을 성형한 후 상기 스트립의 상면을 중앙부와 그 양외측부를 각형돌기(82,83)로 순차 가압하면 4개의 후부와 3개의 박부를 갖는 스트립(80)으로도 성형할 수 있는 것이다.In the case of a release strip in which a plurality of rear and thin portions are formed by applying the above process, the curved surface 81 is formed on the lower surface of the material strip as shown in FIG. 8, and then the upper surface of the strip is formed at the center and both sides thereof. Pressing sequentially with the square projections 82 and 83 can be formed into a strip 80 having four rear portions and three thin portions.

또 상기과정에서 소재스트립 하면 중앙에 곡면(81)을 후술할 도9의 돌기(91)와 곡면(92)돌기로 성형한 후 그 상면을 중앙부와 그 양외측을 전술한 과정의 각형 돌기(82,83)로 순차 가압하되 폭양외측 후부를 박부로 성형하면 중앙의 박부폭이 넓어져 도6의 스트립(30)이 대칭을 갖도록 성형할 수 있다.In the above process, the curved surface 81 is formed at the center of the lower surface of the material strip as the protrusion 91 and the curved surface 92 as shown in FIG. 9 to be described later, and the upper surface of the upper surface is the rectangular projection 82 of the above-described process. When the pressure is gradually applied to the thin portion, the thin portion of the central portion is widened, so that the strip 30 of FIG. 6 may be symmetrical.

또한, 스트립 중앙을 박부로 그 양외측을 후부로 형성한 이형스트립일 경우는 도9에서와 같이 소재스트립하면 좌우내측으로 경사부(93)와 평면부(94)를 구비한 돌기(91)와 돌기(91)사이에 곡면(92)돌기를 성형한 후 상기 스트립 상면을 전술한 과정과 같이 각형돌기(95)로 가압하여 성형할 수 있는 것이다.In addition, in the case of a release strip having a thin strip at the center and a rear portion at both sides thereof, as shown in FIG. 9, when the material strip is formed, the projection 91 having the inclined portion 93 and the flat portion 94 in the left and right sides and After forming the curved surface 92 projection between the projections 91, the upper surface of the strip may be molded by pressing the square projection 95 as described above.

상기의 경우 곡면(92)돌기는 선(Wire)과 같은 형상을 갖고 있으므로, 길이방향으로의 연신보다 폭방향으로 전신율이 높고 경사부(93)는 전술한 과정과 같이 폭방향 전신율을 높이기 때문에, 스트립 중앙에 넓은 박부를 성형할 수 있는 것이다.In this case, since the curved surface 92 has a wire-like shape, the whole body ratio is higher in the width direction than the stretching in the longitudinal direction, and the inclined portion 93 increases the width ratio in the width direction as described above. Therefore, a wide thin part can be formed in the center of a strip.

도1a, 도1b는 종래기술 브이밀(V-Mill)방법을 설명하기 위한 사시도.Figure 1a, Figure 1b is a perspective view for explaining the prior art V-Mill method.

도2내지 도4는 종래기술 엠지알(MGR)방법을 설명하기 위한 단면도.2 to 4 are cross-sectional views for explaining the conventional MGR method.

도5는 본 발명의 제조방법을 설명하기 위한 설비의 평면 개념도.5 is a plan conceptual view of a facility for explaining the manufacturing method of the present invention.

도6내지 도9는 본 발명의 제조방법을 설명하기 위한 성형과정 단면도.6 to 9 is a cross-sectional view of the molding process for explaining the manufacturing method of the present invention.

Claims (4)

이송하는 소재스트립폭 방향에 후부와 박부를 성형하는 이형스트립의 제조방법에 있어서, 소재스트립하면 양외측에 돌기(1)형 凹홈을 형성한 박부와 중앙에 후부를 갖인 스트립(20)으로 성형하는 단계와,In the manufacturing method of the release strip which shape | molds a back part and thin part in the material strip width direction to convey, WHEREIN: When a material strip is formed into the strip part which formed the projection 1 groove | channel in both sides, and the strip 20 which has a rear part in the center. To do that, 상기 스트립(20)상면에 평형의 박부와 후부를 갖인 스트립(30)으로 성형하는 단계를 거쳐 성형이 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.Method of producing a release strip, characterized in that the molding is made through the step of forming a strip 30 having a thin thin portion and the rear portion of the equilibrium on the strip (20). 제1항에 있어서, 상기 돌기형상을 곡면형돌기로 하여 성형이 이루어지는 것을 특징으로하는 이형스트립의 제조방법.The method for manufacturing a release strip according to claim 1, wherein molding is performed by using the protrusion shape as a curved protrusion. 제1항 또는 제2항에 있어서, 상기 소재스트립 하면에 복수개 이상의 돌기형 凹홈을 갖인 박부를 형성시켜 복수개 이상의 후부와 박부를 갖인 스트립으로 성형이 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.The method for manufacturing a release strip according to claim 1 or 2, wherein a thin portion having a plurality of protrusions or grooves is formed on the lower surface of the material strip to form a strip having a plurality of rear portions and thin portions. 제1항에 있어서, 상기 소재스트립하면 중앙에 돌기와 곡면돌기형 凹홈을 갖인 박부를 형성시켜 스트립 중앙에 박부성형이 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.The method of claim 1, wherein the material strip is formed in the center of the strip by forming a thin film having a projection and a curved projection groove in the center of the strip strip forming method, characterized in that the strip.
KR1020070099118A 2006-11-20 2007-10-02 Production Method of Multi Gauge Strips KR100903266B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020070099118A KR100903266B1 (en) 2007-10-02 2007-10-02 Production Method of Multi Gauge Strips
PCT/KR2007/005838 WO2008062992A1 (en) 2006-11-20 2007-11-20 Production method of multi-gauge strips
JP2009537090A JP2010510066A (en) 2006-11-20 2007-11-20 Multi-gauge strip manufacturing method
CN2007800430690A CN101563175B (en) 2006-11-20 2007-11-20 Production method of multi-gauge strips
US12/514,583 US20100031727A1 (en) 2006-11-20 2007-11-20 Production method of multi-gauge strips
TW097137003A TWI407517B (en) 2007-10-02 2008-09-26 Production method of multi-gauge strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070099118A KR100903266B1 (en) 2007-10-02 2007-10-02 Production Method of Multi Gauge Strips

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KR101087433B1 (en) 2009-09-28 2011-11-25 현대제철 주식회사 Mult-step rolling roll and rolling method using thereof
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