KR100694615B1 - Production method of multi gauge strip - Google Patents

Production method of multi gauge strip Download PDF

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KR100694615B1
KR100694615B1 KR1020050133238A KR20050133238A KR100694615B1 KR 100694615 B1 KR100694615 B1 KR 100694615B1 KR 1020050133238 A KR1020050133238 A KR 1020050133238A KR 20050133238 A KR20050133238 A KR 20050133238A KR 100694615 B1 KR100694615 B1 KR 100694615B1
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South Korea
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strip
shaped
shape
manufacturing
cross
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KR1020050133238A
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Korean (ko)
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김충열
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김충열
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    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • 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
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

A method for manufacturing a multi gauge strip is provided to obtain high competitiveness in terms of manufacturing cost and productivity by easily manufacturing the multi gauge strip using an ordinary lightweight apparatus for manufacturing the multi gauge strip without using an exclusive apparatus for manufacturing the multi gauge strip. In a method for manufacturing a multi gauge strip by press forming a thick part and a thin part on the strip workpiece in a width direction of the strip workpiece while a strip workpiece is sequentially transferred between forming tools within an upper mold and a lower mold, the method comprises: forming the strip workpiece into a strip(1) in which a " / \ " cross-sectional shape is connected to a "U" cross-sectional shape in a width direction of the strip workpiece; pressing "U" shaped both side faces of the strip(1) to form a strip(2) with a symmetrical "Z" cross-sectional shape; and pressing a "Z" shaped upper surface of the strip(2) to form a multi gauge strip which has a symmetrical "S" shape and includes a thick part(3') and a thin part.

Description

이형 스트립의 제조방법{Production Method of Multi Gauge Strip}Production Method of Multi Gauge Strip

도 1a, 1b는 종래의 이형스트립 제조방법 및 적용예를 설명하는 단면도1A and 1B are cross-sectional views illustrating a conventional release strip manufacturing method and application examples.

도 2는 본 발명의 성형품 예시 단면도Figure 2 is a cross-sectional view illustrating the molded article of the present invention

도 3a, 3b는 본 발명의 제1실시예의 제조장치 개념도 및 성형 단면도3A and 3B are conceptual views and molding cross-sectional views of the manufacturing apparatus of the first embodiment of the present invention.

도 4a, 4b는 본 발명의 제2실시예의 제조장치개념도 및 성형 단면도4A and 4B are conceptual views and molding cross-sectional views of the manufacturing apparatus of the second embodiment of the present invention.

도 5a, 5b는 도2의 성형품 성형 과정 단면도5A and 5B are cross-sectional views of the molding process of FIG.

*도면의 주요부분에 대한 부호 설명** Description of symbols on the main parts of the drawings *

01 : 상형 02 : 하형 1,1",2,3 : 스트립01: Upper type 02: Lower type 1,1 ", 2,3: Strip

11,12,13 : 펀치 11b : 하면 13' : 凹홈11,12,13: Punch 11b: Lower surface 13 ': Deep groove

21,22,23 : 다이스 21',22',23' : 돌기 22a : 로드21,22,23: Die 21 ', 22', 23 ': Projection 22a: Rod

1,2,3,4 : 상롤 1',2',3',4' : 하롤 1a,2a,4a : 凹홈1,2,3,4: Upper roll 1 ', 2', 3 ', 4': Lower roll 1a, 2a, 4a: Groove

1",2",3",4" : 凸형 10,20,30,40,50 : 스트립1 ", 2", 3 ", 4": Flat 10,20,30,40,50: Strip

3 : 측면롤 3' : 받침롤3: side roll 3 ': support roll

본 발명은 스트립폭부에 길이를 따라 중앙 또는 양측폭부에 凹형 또는 凸형 을 성형하는 것으로, 리드후레임과 콘넥터용 소재등으로 사용하는 이형스트립 제조방법에 관한것이다.The present invention relates to a method for manufacturing a release strip for use as a lead frame, a connector material, and the like, by forming a 凹 or 凸 shape in a center or both width portions along a length of a strip width portion.

종래, 이형스트립의 주용도는 파워트랜지스터(Power Transistor)용 리드후래임(Lead Frame)이며, 형상은 스트립 중앙 또는 양측폭부에 후부또는 박부를 형성하고, 두께비(후부/박부)가 큰 특징을 갖고 있다.Conventionally, the main use of the release strip is a lead frame for a power transistor, and the shape has a feature of forming a rear portion or a thin portion at the center or both widths of the strip, and having a large thickness ratio (rear / thin portion). .

그러므로 압연을 하게 되면 박부의 길이가 커져 계속할 수가 없게 된다. 그래서 도 1a의 단면 Ⅰ과 같이 박부재(1')와 후부재(1)를 용접(w)하던가, 도 1a의 단면 Ⅱ와 같이 소재(2) 양측부를 절삭(2')한 후 압연을 한다. 전자의 용접방식은 용접비용과 품질신뢰도에 문제가 있으며, 후자의 절삭방식은 재료의 손실이 큰 것이 단점이다.Therefore, when rolling, the length of the thin portion becomes large so that it cannot continue. Thus, the thin member 1 'and the rear member 1 are welded (w) as shown in cross section I of FIG. 1A, or both sides of the raw material 2 are cut (2') as shown in cross section II of FIG. The former welding method has a problem in welding cost and quality reliability, and the latter cutting method has a large material loss.

그래서 압연으로 이형성형을 하면서 박부가 길이 방향으로 연신되는 량을 억제하고 폭방향으로 전신되도록 다양한 방법들이 연구되어 적용되고 있다.Therefore, various methods have been studied and applied to suppress the amount of thin portion extending in the longitudinal direction and to carry out the whole in the width direction while performing mold release by rolling.

도1a의 단면 Ⅲ의 방법은 부이밀(V-Mill)이라 불리는 방법(일본특허공보제평2-182339호)으로, 소재상면에는 왕복압연롤 (3a)이 구비되고, 하면에는 다이스(3b)위로 경사부(3)가 돌출되여 측방향으로 V자를 형성하며 넓어지고(도시없슴) 경사부(3)양내측으로는 凹홈에 형성되어 스트립이 凹홈 내로 삽입되어 후부(3")를 성형하며, 경사부 양외측으로 경사각을 넓혀 박부(3')를 형성케 한것이다.The method of section III of Fig. 1A is a method called V-Mill (Japanese Patent Laid-Open No. 2-182339). A reciprocating rolling roll 3a is provided on the upper surface of the material, and a die 3b on the lower surface thereof. The inclined portion 3 protrudes to form a V shape in the lateral direction (not shown), and the inclined portion 3 is formed in the groove on both sides so that a strip is inserted into the groove to form the rear portion 3 ". The inclined angle is widened to both sides of the inclined portion to form a thin portion 3 '.

위 방법은 후부(3")가 다이스 凹홈내에 강제 삽입되므로 목적하는 형상으로 성형하는 이점은 있으나, 롤이 왕복운동을 하여야 하므로 생산성에 제약이 따른다.The above method has the advantage of forming the desired shape because the rear portion (3 ") is forcibly inserted into the die groove, but the productivity is limited because the roll must be reciprocated.

도 1a의 단면 Ⅳ의 방법은 구압연이라 불리는 방법(미국특허 제 4,578,979 호)으로 단면 형상과 대응하는 상하롤(4a,4b)과 평형의 상하롤(4c,4d)을 교번하여 다수단의 롤셋트로 구성된 것이다.The method of cross-section IV of FIG. 1A is a method called spherical rolling (US Pat. No. 4,578,979), which alternates the top and bottom rolls 4a and 4b corresponding to the cross-sectional shape with the top and bottom rolls 4c and 4d in equilibrium. It consists of a set.

위방법은 소재 양측부를 굴곡가압하며 박부(4')로 성형후 평형으로 교정하는 과정을 반복하면서 후부 양측부(4")두께를 내측으로 감소시키며 박부로 하고 후부(4)자체 두께도 감소시킨다.This method flexes and compresses both sides of the material and reduces the thickness of the rear two sides 4 "to the inside, thins it and reduces the thickness of the rear 4 itself while repeating the process of forming the thin portion 4 'and correcting it to equilibrium. .

따라서 다수단의 롤셋트를 필요로 하므로, 설비가 대형화되고, 다수단의 상하 평형롤은 생산공구가 되므로, 결국제조비가 높고 소량 다품종 생산이 어렵다.Therefore, since a large number of roll sets is required, the equipment is enlarged, and the upper and lower balance rolls of the plurality of stages become a production tool, so that production costs are high and production of small quantities of various kinds is difficult.

도 1a의 단면 Ⅴ의 방법(미국특허제 5,890,389호)은 전술한 구압연이라 불리는 방법과 같이 다수단의 롤셋트롤에 상하롤(5a,5b)이구비 된것이며, 소재중앙부를 상롤(5a) 凹홈내에 삽입시키면서 후부(5)로 성형하고 박부(5')는 각롤셋트를 거치면서 양측을 전신시키여 형성하게 한것이다.The method of the cross-section V of FIG. 1A (US Pat. No. 5,890,389) is provided with the upper and lower rolls 5a and 5b in a plurality of stages of the roll-set trolley as in the above-described method of rolling. The center portion of the material is the upper roll 5a. 성형 It is molded into the rear part 5 while being inserted into the groove, and the thin part 5 'is formed by making the two sides whole body while passing through each roll set.

위 방법도 다수단의 롤셋트와 생산공구인 다수의 성형롤이 소요되므로 제조비가 높고 소량다품종 생산이 어려우며, 대형화 설비를 필요로한다.The above method also requires a large number of roll sets and a large number of forming rolls, which are production tools, and thus require high manufacturing costs and difficulty in producing small quantities of various kinds of products.

상기외에도 다양한 제조방법이 적용되고 있으나, 생산성이 낮은 공통점을 갖고 있으며, 성형능력의 제한으로 凹,凸형 모두를 성형하지 못하며, 후부와 박부의 두께차가 큰 것 또한 제한적으로 적용되고 있는 것이 종래방법의 단점으로 지적된다.In addition to the above, a variety of manufacturing methods have been applied, but the productivity has a common point, and due to the limitation of the molding capacity, it is not possible to mold both 凹 and 凸 type, and the large difference in thickness of the rear part and thin part is also limitedly applied. It is pointed out as a disadvantage.

상기와 같이 제조된 이형스트립은 도 1b의 도시와 같이 후부(1)와 박부(1')를 형성하고, 스템핑(stamping)을 하게된다.The release strip manufactured as described above forms a rear portion 1 and a thin portion 1 ', as shown in FIG. 1B, and is stamped.

스템핑후에는 후부(1)가 중심선 좌우대칭으로 안내홀(2)을 갖고 박부(1')는 후부하면 양측으로 굴곡(1") 되여 리드가 되며, 2개로 분리되여 각각의 리드후레임이 된다.After stamping, the rear part 1 has the guide hole 2 in the symmetry of the center line, and the thin part 1 'becomes the lead by bending (1 ") to both sides when it is rear part, and is separated into two and becomes each lead frame. .

상기 2개로 분리된 리드후레임의 각개는 후부하면에 반도체칩(3)이 부착되고, 칩보호를 위해 경화형수지재로 몰딩(4)을 하고, 후부상면은 열방출을 위해 노출면(5)으로 노출시켜 둔다.Each of the two separated lead frames has a semiconductor chip 3 attached to the rear surface, molded 4 with a curable resin material for chip protection, and the rear surface is exposed to the exposed surface 5 for heat dissipation. Leave it exposed.

이상과 같이 종래이형스트립은 요구되는 기계성질, 내열강도, 표면조(정)도 등의 제성질이 타재종과 동일한 정도다.As described above, the conventional release strip has the required properties such as mechanical properties, heat resistance, surface roughness, and the like, as the other grades.

다른점은 후부상면을 노출시켜 열방출 효과를 갖도록 스트립에 후.박부를 성형하는 것이며, 이를 위한 제조방법이 전술한 특정의 기술과 특정의 설비로만 가능하다는 것이다.The difference is that the posterior thin surface is molded into a strip to have a heat dissipation effect by exposing the posterior top surface, and a manufacturing method for this is possible only with the above-described specific technology and specific equipment.

그러나 상기의 방법들은 성형과정의 특성상 후부는 소재상태의 연질재로 남고 박부는 큰체적변화로 경질재가되여 후부와 박부는 외형과 조직면에서 선명한 경계를 갖으며 성형된다.However, the above methods are characterized by the molding process, the rear part remains a soft material in the state of the material, the thin part becomes a hard material due to the large volume change, and the rear part and the thin part are molded with a clear boundary in appearance and texture.

또 결정입도의 배열방향도 후부는 소재상태대로 있으나, 박부는 압연방향에서 양측폭부로 전신시, 압연방향에서 사각을 갖으며 배열하게 된다.In addition, the rearward direction of the grain size is also in the state of the raw material, but the thin parts are arranged with the squares in the rolling direction when the whole body is moved to both side width portions in the rolling direction.

따라서 이후공정에서 열처리에 의한 재결정으로 균질화 시킨다해도 근본적으로 방향성을 제거하기에는 어려움이 있으며, 이를 위한 열처리와 압연율 조정범위가 좁아져 작업조건을 어렵게 한다.Therefore, even after homogenization by recrystallization by heat treatment in the subsequent process, it is difficult to fundamentally remove the directionality, and the heat treatment and rolling rate adjustment range for this is narrowed, making the working conditions difficult.

또 이와 같은 상황은 스템핑시 리드의 휨, 꼬임등의 변형으로 스템핑공구의 파손으로 이여져, 이를 예방하기 위해 상기의 이형스트립제조 조건을 더욱 어렵게 한다.In addition, this situation leads to breakage of the stamping tool due to deformation of bending, twisting, etc. of the lead during stamping, which makes the release strip manufacturing conditions more difficult to prevent.

본 발명은 상기의 제반문제점을 개선하고져, 소재스트립폭부를 좌우로 굴곡시키여 도2의 단면 Ⅰ의 凸형 스트립과 같이 단일스트립폭을 굴곡하여 후부(1)와 박부(1')로 성형하고, 단면 Ⅰ의 凸형스트립2개를 폭으로 연결한 단면Ⅱ의 후부(2)와 박부(2')를 갖는 스트립으로 성형하며, 단면Ⅲ의 凹형스트립을 성형하여 후부(3)를 스트립폭 양측에 형성시키고 박부(3')는 중앙에 형성시키는등 다양한 형상의 이형스트립을 성형할 수 있게 하며,The present invention improves the above-mentioned problems, and the material strip width is bent to the left and right, and the single strip width is bent to form the rear portion 1 and the thin portion 1 'like the X-shaped strip of section I of FIG. A strip having a rear portion (2) and a thin portion (2 ') of the cross section II, in which two X-shaped strips of cross section I are connected in width, and a thin strip of cross section III is formed to form a rear width (3). It is formed on both sides and the thin part 3 'is formed in the center, so that it is possible to mold release strips of various shapes.

프레스기의 상하금형내에, 또는 상하성형롤 사이를 통과시켜 전용설비 또는 전용기술 없이도 범용의 경량화설비로 용이하게 제조할 수 있게 하여,Through the upper and lower molds of the press, or between the upper and lower forming rolls, it can be easily manufactured as a general-purpose lightweight equipment without dedicated equipment or specialized technology.

제조원가 생산성등에서 높은 경쟁력을 갖는 제조방법을 제안한다.We propose a manufacturing method with high competitiveness in production cost productivity.

본 발명은 상기의 목적을 달성하고져, 제1의 성형방법은 프레스기에 취부되여 상하대응하는 형상의 펀치와 다이스를 입구측에서 출구측으로 배열한 금형상하사이를 스트립이 순차이송하며, 스트립중앙양측부를 굴곡시켜 단면이 八자형상과 ㄷ자형상이 연결되여 성형된 스트립으로 성형하고, 상기 스트립 ㄷ자형상 양측벽을 가압하여, 대칭의 Z자형상의 단면을 갖는 스트립으로 성형하고, 상기스트립의 상면을 가압하여 대칭의 ㄹ자형상단면을 갖고, 접합되여 후부와 박부가 성형되도록 구성하였다.The present invention achieves the above object, the first forming method is mounted on the press machine, the strip is sequentially transferred between the upper and lower dies of the punch and die of the corresponding shape up and down from the inlet side to the outlet side, By bending, the cross section is formed into a strip formed by connecting the octagonal shape and the U shape, and pressing the strip U-shaped side walls to form a strip having a symmetrical Z-shaped cross section and pressing the upper surface of the strip. It had a symmetrical r-shaped cross section and was joined to form a rear part and a thin part.

그리고 제2의 성형방법은 다수단의 상하롤과 좌우측면롤 사이를 스트립이 연 속 이송하며, 스트립 양측부를 굴곡하여 단면이 八자 형상을 갖는 스트립으로 성형하고, 상기스트립 좌우측면을 가압하여 스트립 중앙부에 ㄷ자 형상단면을 갖는 스트립으로 성형하고, 상기 스트립 ㄷ자형상 양측벽부를 가압하여 대칭의 Z자 형상의 단면을 갖는 스트립으로 성형하고, 상기 스트립의 상면을 가압하여 대칭의 ㄹ자형상단면을 갖고 접합되여 후부와 박부가 성형되도록 구성하였다.In the second forming method, the strip is continuously transferred between the upper and lower rolls and the left and right side rolls of a plurality of stages, the both sides of the strip are bent to form a strip having an octagonal cross section, and the strip is pressed by the left and right sides of the strip. It is formed into a strip having a c-shaped cross section at the center, and formed into a strip having a symmetrical z-shaped cross section by pressing the strip c-shaped side walls, and pressing the upper surface of the strip to have a symmetric r-shaped cross section. Bonded to form the rear and thin parts.

이하 본발명의 제1실시예를 도면을 참고로 상세히 설명한다.Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

도3a,3b는 본실시예에서 적용한 성형장치의 개념설명도와 성형과정별 형상단면도이다.3A and 3B are conceptual explanatory diagrams and shape cross-sectional views of molding processes applied in the present embodiment.

상하형(01,02)사이, 스트립(1')진행방향으로 굴곡펀치(11)와 굴곡다이스(21)가 조립되고, 이어서 측압펀치(12)와 측압다이(22)가 조립되고, 이후성형펀치(13)와 성형다이(23)가 조립되어있다.Between the top and bottom dies 01 and 02, the bending punch 11 and the bending die 21 are assembled in the strip 1 'advancing direction, and then the side pressure punch 12 and the side pressure die 22 are assembled, and then molded. The punch 13 and the forming die 23 are assembled.

굴곡펀치(11)는 펀치하면(11b)중앙좌우에서 점차 경사(11')를 갖고 凹홈을 형성하며, 凹홈 양측평면(11")과 연결된 직각부는 점차 곡면을 형성하며 경사(11')와 연결되고, 하면(11b)좌우측에는 경사면(11a)을 갖었다.The bend punch 11 has an inclined 11 'at the center left and right at the bottom of the punch 11b to form a concave groove, and a right angle portion connected to the concave groove both sides 11 " gradually forms a curved surface and is inclined 11'. And inclined surfaces 11a on the left and right sides of the lower surface 11b.

굴곡다이스(21)는 凸형상을 갖고 돌기(21')와 평면(21")이 직선을 형성하여, 돌기(21')상면은 스트립입구측에 후면까지 굴곡펀치(11)의 하면(11b)과 스트립두께 만큼의 간극을 갖고 접해있다.The curved die 21 has a U-shape, and the protrusion 21 'and the plane 21 "form a straight line, and the upper surface of the protrusion 21' is the lower surface 11b of the bending punch 11 to the rear side at the strip inlet side. It is close to the gap with the thickness of the strip.

스트립(1')은 상기펀치(11)와 다이스(21)사이 후면까지 프레스 상하작동에 의해 진입되여 성형이 이루어진다.The strip 1 ′ enters by pressing up and down to the rear surface between the punch 11 and the die 21, and molding is performed.

이때 스트립(1')양측폭은 굴곡펀치(11)의 경사(11a)면을 따라 위치가 고정되 며, 스트립은 굴곡다이스(21)의 돌기(21')폭 좌우로, 굴곡펀치(11)의 양측경사(11')부의 가압을 받아, 도 3b의 도시와 같이 八자형상스트립(1")으로 굴곡성형 되며, 八자형상은 점차 굴곡펀치(11)의 양평면부(11")의 가압에 의해 스트립 중앙부에 ㄷ자형상을 성형한다.At this time, the width of both sides of the strip (1 ') is fixed along the inclined (11a) surface of the bending punch 11, the strip is left and right of the projection (21') width of the bending die 21, the bending punch (11) Under both sides of the inclined portion 11 ', the curved portion is formed into an octagonal strip 1 "as shown in FIG. 3B, and the octagonal shape gradually pressurizes both flat portions 11" of the bending punch 11, respectively. The U-shaped shape is formed at the center of the strip.

상기에서 성형된 스트립은 입구측에서 평면의 스트립이, 스트립중앙좌우로 八자형상의 경사를 갖으며 이경사는 ㄷ자형상과 연결된 스트립(1)으로 동시에 성형이 이루어지는 것이다.In the above-described shaped strip, a flat strip at the inlet side has an octagonal inclination to the center, left and right of the strip, and the inclined strip is simultaneously formed into the strip 1 connected with the U-shape.

상기 스트립(1)은 측압펀치(12)와 다이스(22) 상면에 진입된다.The strip 1 enters the upper surface of the pressure punch 12 and the die 22.

측압펀치(12)는 양측단부에 경사(12')를 갖고, 상형(10)에 부착되여 단부에 측압펀치의 단부경사(12')와 대응하는 경사(22b)를 갖인 로드(22a, Rod)를 구비하고, 다이스(22)는 돌기(22')와 평면 (22")을 형성한 凸형상을 갖는다.The side pressure punch 12 has a rod 12a at both side ends, and is attached to the upper die 10, and has rods 22a and rods at the ends having an end slope 12 'corresponding to the end slope 12' of the side pressure punch. And the dice 22 have a fin shape in which the protrusions 22 'and the plane 22 "are formed.

상기에 진입된 스트립(1)의 ㄷ자형상 양측부는 상형(01)의 하강으로 로드의 경사(22b)단부가 측압펀치(12)의 양측경사(12')단부를 중앙내측으로 가압하여, ㄷ자형상은 하부가 내측으로 변형되여, 측면이 내측으로 경사(2")를 갖고, ㄷ자형상상면(2')은 낮아지며 좌우대칭의 Z자형상 단면을 갖는 스트립(2)으로 성형된다.The c-shaped both sides of the strip (1) entered into the lower portion of the upper die (01), the end of the inclined (22b) of the rod presses both sides of the inclined (12 ') end of the side pressure punch 12 into the center, c-shaped The lower part is deformed inwardly, so that the side faces are inwardly inclined (2 "), the c-shaped surface 2 'is lowered and is formed into a strip 2 having a symmetrical Z-shaped cross section.

상기에서 경사(2")양측내면은 다이스(22)의 돌기(22')양외측의 제한으로 좌우대칭의 위치를 형성한다.In the above, the inclined 2 "inner surface forms the left-right symmetrical position by restriction | limiting on both sides of the protrusion 22 'of the dice | dies 22. As shown in FIG.

상기 스트립(2)은 성형펀치(13)와 다이스(23)내로 이송된다.The strip 2 is conveyed into the forming punch 13 and the die 23.

성형펀치(13)는 평면부(13")에 凹홈(13')을 갖고, 성형다이스(23)는 평면부(23")에 돌기(23')를 형성한 凸형상을 갖는다.The shaping punch 13 has a shaping groove 13 'in the flat portion 13 ", and the shaping die 23 has a shaping shape in which the projection 23' is formed in the flat portion 23".

상기에 진입된 스트립(2)은 성형펀치(13) 凹홈(13')이 Z자형상 상면(2')을 가압하여, Z자형상 경사(2")하부 내면은 성형다이돌기(23') 양측면과 접하며, Z자형상은 ㄹ자형상을 갖으며 굴곡접합되여 후부(3')와 박부를 갖는 이형스트립(3)으로 성형하게 된다.In the strip 2, the forming punch 13 and the groove 13 'press the Z-shaped upper surface 2', and the inner surface of the lower portion of the Z-shaped slope 2 " ) It is in contact with both sides, the Z-shape has a r-shape and is bent bonded to form a release strip (3) having a rear portion (3 ') and thin.

상기에서 ㄹ자형상의 후부(3')내외측(3",3a)의 직선부는 펀치의 凹홈(13')과 다이스 凸형돌기(23')에 의해 형성되며, 필요에 따라 스트립 절곡시 자연적으로 형성되는 곡면으로 유지할 수도 있다.In the above, the straight portions of the inner and outer sides 3 " and 3a of the r-shaped rear portion 3 'are formed by the groove 13' of the punch and the die groove 23 ', which are naturally necessary when bending the strip. It can also be maintained as a curved surface formed by.

또 절곡시 내접면에 발생하는 공간(Teardrop Hem)은 두께 1mm이하의 연질재에서는 없으며, 생산성을 고려하여 후판재를 소재로 적용할 경우는 상응하는 가압력을 높여 주므로서, 굴곡접면을 공간없이 접면시킬 수 있다.In addition, the teardrop hem generated on the inner surface during bending does not exist in the soft material less than 1mm in thickness, and when applying thick plate material as a material in consideration of productivity, the corresponding pressing force is increased, so that the curved contact surface can be folded without space. You can.

또 후부중앙하면의 다이스 凸형 돌기(23')폭 만큼의 체적은 소재량을 줄이기 위한 것이며, 필요에 따라 도2의 단면 Ⅰ형상과 같이 동일두께의 후부로 성형 할 수도 있다.In addition, the volume as much as the width | variety of the die | dye type | mold protrusion 23 'of the rear center lower surface is for reducing a quantity of materials, and if necessary, it can also shape | mold to the rear part of the same thickness like the cross section I shape of FIG.

도2의 단면 Ⅰ형상과 같이 후부(1)를 동일두께로 하고 박부(1')를 갖는 형상의 성형은 전술한 성형과정과 동일과정으로 성형하되 도3b에서 ㄷ자형 양측벽 높이를 높이면 된다.The shape of the shape having the same thickness and the thin portion 1 'as in the cross-sectional I shape of FIG. 2 may be formed in the same process as the above-described forming process, but the height of the U-shaped side walls in FIG. 3B may be increased.

또 도2의 단면 Ⅱ형상과 같이 이형스트립을 2개로 연결하여 후부(2)와 박부(2')를 갖는 형상성형은 도5a에서와 같이 스트립 중앙에 ㄷ자형상으로 절곡(1,1')하고, 굴곡부외측을 다시 굴곡(2,2')한후 ㄷ자측벽부를 경사면(3)으로 굴곡시키면 대칭의 Z자형상을 갖게되며, 이후 전술한 과정으로 Z자상면을 가압하여 성형한다.Also, as shown in section II of FIG. 2, the mold having the rear part 2 and the thin part 2 'by connecting two release strips is bent (1, 1') at the center of the strip as shown in FIG. 5A. After bending the outer side of the bent portion (2,2 ') and bending the c-side wall portion to the inclined surface (3), it has a symmetrical Z-shape, and then presses the Z-shaped surface by the above-described process.

또한 도2의 단면 Ⅲ의형상과 같이 후부(3)를 스트립폭 양측에 성형하고 박부(3')를 중앙에 갖는 형상성형을 도5b에서와 같이 스트립 중앙부를 절곡(1,1')하여 ㄷ자형상으로 성형한 후 ㄷ자형상 양측부를 가압하여 ㄷ자형측벽부를 경사면(2)으로 성형한후, 이후 전술한 과정으로 스트립 상면을 가압하여 성형한다.Also, as shown in the cross-section III of FIG. 2, the rear portion 3 is formed on both sides of the strip width, and the shape having the thin portion 3 'at the center is bent (1, 1') as shown in FIG. After shaping into a shape, the U-shaped side walls are molded by the inclined surface 2 by pressing both sides of the U-shape, and then the upper surface of the strip is pressed by the above-described process.

이외에도 스트립폭 임의의 위치에 후부를 복수개 이상도 성형가능하며, 재질도 소성가공 가능한 소재는 모두 적용될 수 있다.In addition, a plurality of rear parts may be molded at any position of the strip width, and any material capable of plastic processing may be applied.

이상의 본 실시예에서와 같이 성형한 이형스트립은 그대로 사용할 수도 있으며 이후 질별, 두께등의 제성질을 목적하는데로 조정하기위해 열처리와 압연을 반복한다.The release strip molded as in the present embodiment may be used as it is, and then heat treatment and rolling are repeated to adjust the quality of the forming properties such as quality and thickness.

상기 과정에서 ㄹ자형상으로 압착되여 접합된 스트립의 상하 접면부는 잘알려진 크래딩(Clading) 접합과정과 같이 일체형으로 접착하게 된다.In the above process, the upper and lower contact portions of the strip, which are compressed by the L-shape and are bonded, are integrally bonded as in the well known cladding bonding process.

이상전술한 바와 같이 통상의 범용설비인 프레스기와 금형을 이용하여, 통상의 작업방법으로 소재스트립폭을 좌우로 굴곡시키여 다양한 형상의 이형스트립으로 성형할 수 있슴을 알 수 있다.As described above, it can be seen that by using a general-purpose press and a mold, the material strip width can be bent from side to side in a normal working method to be molded into a release strip of various shapes.

다음을 본 발명의 제2실시예를 설명한다.Next, a second embodiment of the present invention will be described.

도4a, 4b는 본실시예에서 적용한 성형장치의 개념 설명도와 성형과정별 형상 단면도이다.4A and 4B are conceptual explanatory diagrams and shape cross-sectional views of the molding apparatus applied in this embodiment.

소재스트립(10)진행방향으로 곡면상하롤(1,1')과 굴곡상하롤(2,2') 다음에 측면으로 회전하는 측면롤(3)과 측면롤 하부에 받침롤(3')이 구비되고, 이어서 성형상하롤(4,4')이 배열되여 도시생략된 구동수단에의해 연속 회전한다.The top and bottom rolls 1 and 1 'and the curved top and bottom rolls 2 and 2' in the advancing direction of the material strip 10 and the side rolls 3 rotating laterally and the support rolls 3 'below the side rolls And then the top and bottom rolls 4 and 4 'are arranged to rotate continuously by the driving means not shown.

곡면상롤(1)은 외주중앙에 凹홈(1a)을 형성하고 凹홈 좌우하부에 도4b의 도시와 같이 곡면(1a')을 형성하고, 곡면하롤(1')은 외주중앙 凸형(1")하부양측에 곡면(1b)을 형성하여, 상기 곡면상롤(1)과 스트립(10)두께 만큼의 간극을 갖고 상호 대응하며 조립되여 있다.The curved roll 1 forms the groove 1a at the center of the outer periphery, and forms the curved surface 1a 'at the left and right lower sides of the groove as shown in FIG. 4B, and the curved lower roll 1' has the center of the outer periphery ( 1 ") and the curved surface 1b are formed on both sides of the lower portion, and the curved roll 1 and the strip 10 have a gap corresponding to the thickness thereof, and are assembled to correspond to each other.

소재스트립(10)은 상기 곡면상하롤(1,1')사이를 이송하며, 곡면상롤의 곡면부(1a')의 가압으로 八자형상 단면을 갖는 스트립(20)으로 성형된다.The material strip 10 transfers between the curved upper and lower rolls 1 and 1 ', and is formed into a strip 20 having an eight-shaped cross section by pressing the curved portion 1a' of the curved roll.

상기 스트립(20)은 굴곡상하롤(2,2')사이로 이송된다.The strip 20 is conveyed between curved top and bottom rolls 2, 2 '.

굴곡상롤(2)은 외주중앙에 凹홈(2a)을 형성하고, 굴곡하롤(2')은 외주중앙에 凸형(2")을 형성하여, 상기凹홈(2a)과 대응되도록 구비되였다.The curved upper roll 2 forms a concave groove 2a at the center of the outer periphery, and the curved lower roll 2 'forms a concave shape 2 " at the center of the outer periphery, so as to correspond to the concave groove 2a.

상기에 진입된 스트립(20)은 凹홈(2a)양측단부가 상기스트립(20)의 곡면부(1a')를 가압하여 스트립 중앙부에 ㄷ자형상 단면을 갖는 스트립(30)으로 성형된다.The strip 20 entered above is formed into a strip 30 having a U-shaped cross section at the center portion of the strip by pressing the curved portions 1a 'of both ends of the grooves 2a.

상기 ㄷ자형상 단면을 갖인 스트립(30)은 좌우측면롤(3)과 좌우측면롤 중앙하부에 구비된 받침롤(3')을 통과한다.The strip 30 having a U-shaped cross section passes through the left and right side rolls 3 and the support rolls 3 'provided at the lower center of the left and right side rolls.

측면롤(3)은 외주 상면에 경사(3a)를 갖고 횡방향으로 조립되여, ㄷ자형상 양폭부를 가압하며, 받침롤(3')은 외주중앙의 凸형(3")돌기가 ㄷ자형상 내면에 위치하며, 凸형(3")양측부 외주면은 스트립(30)하면과 접한 상태로 회전을 하도록 구비되여져 있다.The side roll 3 has a slant 3a on the outer circumferential surface, and is assembled in the transverse direction to press the c-shaped both width portions, and the supporting roll 3 'has a "-shaped (3") protrusion in the center of the outer circumference on the inner surface of the c-shaped. The outer circumferential surface of both sides of the fin-shaped (3 ") is provided to rotate in contact with the lower surface of the strip (30).

좌우측면롤(3)사이로 진입되는 스트립(30)의 ㄷ자형상 양측면을 측면롤(3)이 가압하면, ㄷ자형상 양측하부내면은 받침롤(3')외주중앙의 凸형(3") 하부측면에 접 하며, ㄷ자형상 양측면은 경사(3b)를 갖으며, ㄷ형상 상면은 낮아지면서, 좌우대칭의 Z자형상 단면을 갖는 스트립(40)으로 성형된다.When the side rolls 3 press the c-shaped both sides of the strip 30 entering between the left and right side rolls 3, the c-shaped both bottom lower inner surfaces are the bottom surface of the bottom 3 (3 ") of the outer periphery of the support roll 3 '. It is in contact with, the c-shaped both sides have a slope (3b), the c-shaped upper surface is lowered, is formed into a strip 40 having a symmetrical Z-shaped cross-section.

다음은 외주중앙에 凹홈(4a)을 형성한 성형상롤(4)과 외주중앙에 凸형(4")을 형성한 성형하롤(4') 사이로 상기 스트립(40) 이송된다.Next, the strip 40 is transferred between the shaping roll 4 having the shaping grooves 4a formed at the center of the outer periphery and the shaping roll 4 'having the shaping die 4 ″ formed at the center of the outer periphery.

성형상롤(4)의 凹홈(4a)은 Z자형상 상면을 가압하여, Z자형상 좌우경사(3b)내면을, 성형하롤(4')의 凸형(4")양측면과 접하게 하고, Z자형상은 높이가 낮아지면서, 좌우대칭의 ㄹ자형상을 갖으며 굴곡접합되여 후부(3')와 박부를 갖는 이형스트립(50)으로 성형한다.The groove 4a of the shaping roll 4 presses the upper surface of the Z-shape to bring the inner surface of the Z-shaped left and right slopes 3b into contact with both sides of the shaping 4 " As the height is lowered, it has a r-shape of right and left symmetry and is bent to be molded into a release strip 50 having a rear portion 3 'and a thin portion.

이상 설명한 바와 같이 본실시예에서 얻어진 이형스트립은 제1실시예에서 성형한 것과 대부분 동일하며, 다양한 형상으로의 성형 또한 동일하게 얻을 수 있다.As described above, the release strips obtained in this embodiment are mostly the same as those molded in the first embodiment, and molding to various shapes can also be obtained in the same way.

또 성형 각단계의 상하롤은 성형방법이 스트립 폭방향을 굴곡시키는 것이므로, 각 성형롤 가공시 일체형이 않인 조립식으로 적용하여, 다양한 형상성형에 호환성 있게 적용할 수 있다.In addition, the upper and lower rolls of each forming step is to bend the strip width direction of the forming method, and can be applied to various shapes by applying a prefabricated type that is not integral during each forming roll processing.

전술한 본 발명의 제조방법에 따르면, 범용의 기술, 설비와 단순한 작업으로 성형이 이루어지므로, 설비의 경량화, 생산성 향상, 제조윈가 등에서 높은 경쟁력을 갖일 수 있으며,According to the manufacturing method of the present invention described above, since the molding is made by a general technique, a facility and a simple operation, it can be highly competitive in weight reduction, productivity improvement, manufacturing window, etc.,

소재가 굴곡에 의해 성형이 이루어 지므로, 박부의 조직이 방향성을 갖지 않아 스템핑 효율을 높일 수 있으며Since the material is formed by bending, the structure of the thin part has no directivity, so the stamping efficiency can be improved.

다양한 형성 성형이 가능하므로 리드후레임, 콘넥터등의 설계에 다양성을 갖 일 수 있다.Since various forming moldings are possible, the design of lead frames, connectors, etc. can have variety.

Claims (3)

소재스트립이 상형과 하형내의 성형공구사이를 순차 이송하며 폭방향에 후부와 박부를 프레스 성형하는 이형스트립 제조방법에 있어서, 소재스트립(1')폭 방향에 八자형상(1")과 ㄷ자형상 단면이 연결된 스트립(1)으로 성형하고, 상기스트립(1) ㄷ자형상 양측면을 가압하여 대칭의 Z자형상 단면을 갖는 스트립(2)으로 성형하고, 상기스트립(2)의 Z자형상 상면(2')을 가압하여 대칭의 ㄹ자형상을 갖고 접합되여 후부(3')와 박부로 성형이 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.In the method of manufacturing a release strip in which a material strip is sequentially transferred between upper and lower forming tools and press-formed the rear part and thin part in the width direction, an 8-shape shape (1 ") and a c-shape are formed in the width direction of the material strip (1 '). A cross section is formed into a strip (1) connected, and the strip (1) is pressed into both sides of the U-shaped sides to form a strip (2) having a symmetrical Z-shaped cross section, and the Z-shaped top surface (2) of the strip (2). Method for producing a release strip, characterized in that the molding is made of a rear portion (3 ') and thin parts by pressing') and having a symmetrical r-shape. 다수단으로 배열된 각단의 상하롤 사이에 소재스트립이 연속 공급되면서, 소재스트립(10) 폭방향에 八자형상 단면을 갖는 스트립(20)으로 성형하고, 상기 스트립(20)의 양측곡면부(1a')를 가압하여 스트립 폭방향으로 ㄷ자형상 단면을 갖는 스트립(30)으로 성형하고, 상기 스트립(30)의 ㄷ자형상 양측면을 가압하여 대칭의 Z자형상 단면을 갖는 스트립(40)으로 성형하고, 상기스트립(40)의 Z자형상 상면을 가압하여 대칭의 ㄹ자형상을 갖고 접합되여 후부(4b)와 박부로 성형이 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.While the material strip is continuously supplied between the upper and lower rolls of each end arranged in a plurality of stages, the material strip 10 is formed into a strip 20 having an 8-shaped cross section in the width direction, and both side curved portions of the strip 20 ( 1a ') is pressed to form a strip 30 having a c-shaped cross section in the strip width direction, and both sides of the c-shaped side of the strip 30 are pressed to a strip 40 having a symmetrical z-shaped cross section. , Pressing the Z-shaped upper surface of the strip (40) is joined to have a symmetrical r-shape to form the back strip (4b) and the thin portion is a manufacturing method of the release strip. 제1항 또는 제2항에 있어서, 스트립 폭방향에 후부가 복수개 이상 성형되여 이루어지는 것을 특징으로 하는 이형스트립의 제조방법.The method for manufacturing a release strip according to claim 1 or 2, wherein a plurality of rear parts are molded in the strip width direction.
KR1020050133238A 2005-12-29 2005-12-29 Production method of multi gauge strip KR100694615B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102284616A (en) * 2011-06-21 2011-12-21 马鞍山市辰兴机械制造有限公司 Adjustable Z-shaped offset bending mold
KR101431900B1 (en) 2012-01-31 2014-08-21 김충열 Production method of Multi Gauge Strip

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CN102284616A (en) * 2011-06-21 2011-12-21 马鞍山市辰兴机械制造有限公司 Adjustable Z-shaped offset bending mold
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KR101431900B1 (en) 2012-01-31 2014-08-21 김충열 Production method of Multi Gauge Strip

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