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KR101287625B1 - Manufacturing method for Tube of Heat exchanger - Google Patents

Manufacturing method for Tube of Heat exchanger Download PDF

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Publication number
KR101287625B1
KR101287625B1 KR1020110102985A KR20110102985A KR101287625B1 KR 101287625 B1 KR101287625 B1 KR 101287625B1 KR 1020110102985 A KR1020110102985 A KR 1020110102985A KR 20110102985 A KR20110102985 A KR 20110102985A KR 101287625 B1 KR101287625 B1 KR 101287625B1
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base material
bending
forming
cover part
cover
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KR20130039352A (en
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백일현
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대유라디에터공업 주식회사
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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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as 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
    • 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
    • B21D5/10—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 for making tubes
    • B21D5/12—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 for making tubes making use of forming-rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular

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

Abstract

본 발명에 따른 열교환기용 튜브 제조방법은, 모재의 양선단을 절곡하여 커버부와 받침부를 형성하며 모재의 중심을 낮은 각도로 절곡하는 성형공정과, 모재의 중심을 완전히 절곡하여 커버부와 받침부가 연접되도록 하는 연접공정과, 모재의 커버부를 절곡하여 받침부를 감싸도록 하는 커버링공정과, 모재의 커버부와 받침부를 서로 압착함으로써 상기 커버부와 받침부가 형합되도록 하는 압착공정을 포함하여 이루어진다.
상기 성형공정은, 평판형태의 커버부와 지그재그 형태의 받침부가 형성되도록 하는 1차 성형단계와, 모재의 커버부와 받침부의 절곡각도가 직각이 되도록 하는 2차 성형단계와, 모재의 커버부와 받침부가 서로 마주보는 방향으로 배치되도록 하는 3차 성형단계와, 모재의 커버부가 받침부가 서로 마주보는 방향으로 근접되도록 하는 4차 성형단계로 이루어진다.
상기 압착공정에서는 서로 치합되는 한쌍의 기어롤러로 이루어진 압착롤러세트를 사용하여, 서로 겹쳐진 모재의 커버부와 받침부를 압착하여 연속되는 요철(凹凸)형태로 굴곡성형함으로써 접합테두리부를 형성한다.
상술한 바와 같은 본 발명에 열교환기용 튜브 제작방법에 의하면, 압착롤러세트를 이용하는 압착공정을 거치게 되어, 커버부와 받침부가 연속적으로 굴곡되는 요철형태로 강하게 형합됨으로써 파열될 우려가 감소된다.
따라서, 오랜기간 사용되더라도 튜브의 파열에 따른 냉각수의 유출과 같은 문제가 발생할 우려 역시 크게 감소하게 됨으로써 열교환기의 내구성향상에 도움이 된다는 이점이 있다.The method for manufacturing a tube for a heat exchanger according to the present invention includes a forming process of bending both ends of a base material to form a cover part and a support part, and bending the center of the base material at a low angle, and completely bending the center of the base material to the cover part and the support part. And a covering step of bending the cover part of the base material to cover the base part, and a pressing step of pressing the cover part and the base part of the base material to form a joint.
The molding process includes a first molding step of forming a flat cover part and a zigzag supporting part, a second molding step of bending angles of the cover part and the support part of the base material, and a cover part of the base material; It consists of a third molding step so that the supporting portion is disposed in a direction facing each other, and the fourth forming step of the cover portion of the base material to be in close proximity in the direction facing the support.
In the pressing step, the joining roller part is formed by bending the cover part and the supporting part of the base material overlapped with each other by using a pressing roller set composed of a pair of gear rollers engaged with each other.
According to the method of manufacturing a tube for heat exchanger according to the present invention as described above, a pressing process using a pressing roller set is performed, and the cover part and the supporting part are strongly molded in a concave-convex shape that is continuously bent, thereby reducing the risk of rupture.
Therefore, even if used for a long time there is a concern that problems such as the outflow of the coolant due to the bursting of the tube is also greatly reduced, thereby helping to improve the durability of the heat exchanger.

Description

열교환기용 튜브 제조방법{Manufacturing method for Tube of Heat exchanger}Manufacturing method for tube of heat exchanger

본 발명은 튜브의 내구성이 향성되도록 하는 열교환기용 튜브 제조방법에 관한 것이다.
The present invention relates to a method for producing a tube for a heat exchanger that allows for durability of the tube.

일반적으로 수냉식 내연기관은 과열을 방지하기 위하여, 냉각수를 순환하는 구조로 이루어지며, 내연기관을 순환하면서 가열된 냉각수의 냉각을 위하여 라디에이터를 사용하게 된다.In general, the water-cooled internal combustion engine has a structure that circulates the cooling water in order to prevent overheating, and uses a radiator for cooling the heated cooling water while circulating the internal combustion engine.

라디에이터는 상부탱크와 하부탱크 및 상하부 탱크 사이에 구성된 코어를 포함하여 이루어진다.The radiator comprises a core configured between the upper tank, the lower tank and the upper and lower tanks.

코어는 상부탱크를 통해 유입된 냉각수가 하부탱크 측으로 유동되는 통로를 형성하는 다수개의 튜브와, 각 튜브 사이에서 튜브와 접하여 구성됨으로써 튜브와 외기의 열교환면적을 ??히기 위한 방열핀으로 이루어져 있다.The core consists of a plurality of tubes forming a passage through which the coolant flowing through the upper tank flows toward the lower tank, and heat dissipation fins for reducing the heat exchange area between the tubes and the outside air by being formed in contact with the tubes between the tubes.

여기서, 튜브는 열전도율이 높은 금속소재로서, 롤상태로 마련된 평판형태의 모재를 권출하여 연속적으로 단계별 성형과정을 거치는 방식으로 만들어지는 것이 일반적이다.Here, the tube is a metal material having a high thermal conductivity, and is generally made by unwinding a flat base material provided in a rolled state and continuously passing the stepwise forming process.

만들어진 튜브는 최종적으로 납작한 폐곡선형상의 단면구조를 갖도록 이루어진다.The resulting tube is finally made to have a flat closed curved cross-sectional structure.

이와 같은 이른바 연속성형방식에 의한 튜브 제작과정에 있어서는, 서로 교합되도록 구성된 한쌍의 성형롤러로 이루어진 성형유닛이 다수개 배치되어 사용되는데, 성형유닛을 구성하는 성형롤러의 교합면은 단계별로 형태가 다르게 구성된다.In the so-called continuous forming method of the tube manufacturing process, a plurality of forming units composed of a pair of forming rollers configured to interlock with each other are used, and the occlusal surfaces of the forming rollers forming the forming unit are different in stages. It is composed.

이러한 종래 연속성형방식에 의하면 최초의 평판형태 모재가 각 단계별 성형롤러유닛을 순차적으로 거치는 과정에서 점진적으로 성형되어 전술한 바와 같이 폐곡선형상의 단면구조를 갖는 튜브가 만들어지게 된다.According to the conventional continuous molding method, the first plate-shaped base material is gradually formed in the course of sequentially passing the forming roller unit for each step, thereby forming a tube having a closed curved cross-sectional structure as described above.

여기서, 튜브의 단면구조로서는 도 1a에 나타난 것과 같이 튜브(5)의 양선단의 내면이 서로 접하게 됨으로써 접합선단이 돌출된 형태인 이른바 내접형, 도 1b에 나타난 것과 같이 튜브(6)의 양선단의 내면과 외면이 서로 접합되는 이른바 교접형 등으로 이루어질 수 있다. Here, as the cross-sectional structure of the tube, the inner surfaces of both ends of the tube 5 come into contact with each other, as shown in FIG. The inner surface and the outer surface may be made of a so-called articulation type and the like bonded to each other.

성형과정 후에는 디핑(dipping) 과정을 거침으로서 서로 접하는 모재의 양선단이 접합되도록 하여 그 형태를 고정하고, 절단과정을 통해 적정길이로 절단하게 됨으로써 튜브가 만들어진다. After the molding process, the two ends of the base materials in contact with each other by dipping process is bonded to fix the shape, and the tube is made by cutting to the appropriate length through the cutting process.

한편, 열교환기의 튜브(5)(6)는 그 내부를 고온의 냉각수가 통과하는 과정에서 큰 온도변화를 접하게 되므로 미시적이나마 열변형작용에 의해 팽창 수축된다고 볼 수 있다.On the other hand, the tube (5) 6 of the heat exchanger can be seen to be expanded and contracted due to thermal deformation action because it encounters a large temperature change in the process of passing the high-temperature cooling water inside.

그리고, 이러한 열변형현상에 의하면 구조적으로 취약한 부분이 파열되는 문제가 발생할 수 있는데, 특히 종래기술에 의해 만들어진 튜브(5)(6)는 양선단이 접합되는 부위가 길게 이어지는 단순평면형태로 이루어지는 특성상 접합강도가 높지 않기 때문에 파열될 우려가 크다고 볼 수 있다. In addition, the thermal deformation phenomenon may cause a problem that the structurally vulnerable part is ruptured. In particular, the tube (5) (6) made by the prior art is characterized by a simple flat shape in which both ends are joined. Since the bond strength is not high, there is a high risk of rupture.

튜브(5)(6)가 파열되면 냉각수가 튜브 내부에서 유동되는 과정에서 누출되어 급속히 소진됨으로써 내연기관이 과열될 우려가 높아진다는 문제가 발생하게 된다.
When the tubes 5 and 6 are ruptured, the coolant leaks during the flow of the inside of the tube and is rapidly exhausted, resulting in a high risk of overheating of the internal combustion engine.

본 발명은, 튜브의 마무리 접합구조가 견고하게 이루어지도록 함으로써 튜브의 파열우려가 감소되도록 하는 열교환기용 튜브 제조방법에 관한 것이다.
The present invention relates to a method for producing a tube for a heat exchanger, such that the tube rupture concern is reduced by making the finish joint structure of the tube firm.

본 발명에 따른 열교환기용 튜브 제조방법은 평판밴드형태의 모재의 좌측선단을 절곡하여 커버부를 형성하고, 상기 모재의 우측선단을 절곡하여 받침부를 형성하며, 상기 모재의 중심을 낮은 각도로 절곡하는 성형공정과, 상기 성형공정에 이어서 모재의 중심을 완전히 절곡하여 상기 커버부와 받침부가 연접되도록 하는 연접공정과, 상기 연접공정에 이어서 모재의 커버부를 절곡하여 받침부를 감싸도록 하는 커버링공정과, 상기 커버링공정에 이어서 모재의 커버부와 받침부를 서로 압착함으로써 상기 커버부와 받침부가 형합되도록 하는 압착공정을 포함하여 이루어진다.Tube manufacturing method for a heat exchanger according to the present invention is to form a cover portion by bending the left end of the base material in the form of a flat band, forming a support portion by bending the right end of the base material, the bending of the center of the base material at a low angle A step of connecting the cover part and the support part by bending the center of the base material completely after the forming step; and a covering step of bending the cover part of the base material to enclose the support part after the connecting step; The process includes a pressing step of pressing the cover part and the supporting part of the base material together to form the cover part and the supporting part.

상기 성형공정은, 상기 모재의 좌측선단을 낮은 각도로 단순절곡하여 평판형태의 커버부가 형성되도록 함과 동시에, 상기 모재의 우측선단을 낮은 각도로 복합절곡하여 지그재그 형태의 받침부가 형성되도록 하는 1차 성형단계와, 상기 모재의 커버부와 받침부의 절곡각도가 직각이 되도록 하는 2차성형단계와, 상기 2차성형된 모재의 중심을 낮은 각도로 절곡하여 커버부와 받침부가 서로 마주보는 방향으로 배치되도록 하는 3차성형단계와, 상기 3차성형된 모재의 중심을 깊은 각도로 절곡하여 커버부가 받침부가 서로 마주보는 방향으로 근접되도록 하는 4차 성형단계로 이루어진다.In the forming process, the left end of the base material is simply bent at a low angle to form a flat cover part, and at the same time, the right end of the base material is bent at a low angle to form a zigzag supporting part. Forming step, the secondary molding step of the bending angle of the cover portion and the support portion of the base material to be perpendicular to each other, and the center of the secondary molded base material is bent at a low angle to arrange the cover portion and the support portion facing each other It consists of a third molding step and a fourth molding step of bending the center of the tertiary molded base material at a deep angle so that the cover part is close to each other in the direction facing each other.

상기 성형공정에서는 서로 교합되는 한쌍의 성형롤러로 구성되어 각 단계별로 구비된 롤러세트에 의해 모재가 성형된다.In the forming process, the base material is formed by a roller set provided in each step, which is composed of a pair of forming rollers interlocked with each other.

상기 연접공정에서는 중간에 성형슬릿이 갖추어진 성형블럭에 의해, 상기 모재가 상기 성형슬릿을 통과하는 과정에서 모재의 중심이 절곡되어 커버부와 받침부가 서로 연접된다.In the joining process, the center of the base material is bent while the base material passes through the forming slit by a forming block having a forming slit in the middle, and the cover part and the supporting part are connected to each other.

상기 압착공정에서는 서로 치합되는 한쌍의 기어롤러로 이루어진 압착롤러세트를 사용하여, 서로 겹쳐진 모재의 커버부와 받침부를 압착하여 연속되는 요철(凹凸)형태로 굴곡성형함으로써 접합테두리부를 형성한다.
In the pressing step, the joining roller part is formed by bending the cover part and the supporting part of the base material overlapped with each other by using a pressing roller set composed of a pair of gear rollers engaged with each other.

상술한 바와 같은 본 발명에 열교환기용 튜브 제작방법에 의하면, 압착롤러세트를 이용하는 압착공정을 거치게 되어, 커버부와 받침부가 연속적으로 굴곡되는 요철형태로 강하게 형합됨으로써 파열될 우려가 감소된다.According to the method of manufacturing a tube for heat exchanger according to the present invention as described above, a pressing process using a pressing roller set is performed, and the cover part and the supporting part are strongly molded in a concave-convex shape that is continuously bent, thereby reducing the risk of rupture.

따라서, 오랜기간 사용되더라도 튜브의 파열에 따른 냉각수의 유출과 같은 문제가 발생할 우려 역시 크게 감소하게 됨으로써 열교환기의 내구성향상에 도움이 된다는 이점이 있다.
Therefore, even if used for a long time there is a concern that problems such as the outflow of the coolant due to the bursting of the tube is also greatly reduced, thereby helping to improve the durability of the heat exchanger.

도 1a, 1b는 종래기술에 따라 제작된 열교환기용 튜브의 형태를 나타낸 예시도이다.
도 2는 본 발명에 있어서, 성형공정의 1차 성형단계를 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 3은 본 발명에 있어서, 성형공정의 2차 성형단계를 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 4는 본 발명에 있어서, 성형공정의 3차 성형단계를 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 5는 본 발명에 있어서, 성형공정의 4차 성형단계를 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 6은 본 발명에 있어서, 연접공정을 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 7은 본 발명에 있어서, 커버링공정을 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 8은 본 발명에 있어서, 압착공정을 나타냄과 더불어 이에 따른 모재의 성형상태를 나타낸 예시도이다.
도 9는 본 발명에 있어서, 접합테두리부를 아래로 누르는 공정을 나타냄과 더불어 모재의 성형상태를 나타낸 예시도이다.
도 10은 본 발명에 있어서, 접합테두리부를 완전히 아래로 눌러 마감하는 공정을 나타냄과 더불어 모재의 성형상태를 나타낸 예시도이다.
도 11은 본 발명에 따른 튜브 제작방법의 과정을 전체적으로 나타낸 예시도이다.
도 12는 본 발명에 따른 튜브 제작방법의 과정을 나타낸 블럭도이다.Figure 1a, 1b is an exemplary view showing the shape of the tube for the heat exchanger manufactured according to the prior art.
2 is an exemplary view showing the primary molding step of the molding process and the molding state of the base material according to the present invention.
Figure 3 is an exemplary view showing the secondary molding step of the molding process and the molding state of the base material according to the present invention.
Figure 4 is an exemplary view showing the third molding step of the molding process and the molding state of the base material according to the present invention.
5 is an exemplary view showing the fourth molding step of the molding process and the molding state of the base material according to the present invention.
6 is an exemplary view showing a joining process and a molding state of the base material according to the present invention.
7 is an exemplary view showing a covering process and a molding state of the base material according to the present invention.
8 is an exemplary view showing a pressing process and a molding state of the base material according to the present invention.
9 is an exemplary view showing a step of pressing the joining edge down in the present invention, and showing the molding state of the base material.
Figure 10 is an exemplary view showing a molding state of the base material in addition to showing the process of pressing down the bonding edge completely down in the present invention.
11 is an exemplary view showing a whole process of a tube manufacturing method according to the present invention.
12 is a block diagram showing a process of the tube manufacturing method according to the present invention.

이하, 본 발명을 실시하기 위한 구체적인 내용을 도 2 부터 도 12 까지 참조로 하여 설명한다. Hereinafter, specific details for carrying out the present invention will be described with reference to FIGS. 2 to 12.

본 발명에 따른 열교환기용 튜브 제작방법은, 크게 나누어 성형공정(S1), 연접공정(S2), 커버링공정(S3), 압착공정(S4), 마감공정(S5), 디핑공정(S6), 절단공정(S7)순으로 이루어진다.(도 12 참조)Tube manufacturing method for the heat exchanger according to the present invention is largely divided into the forming step (S1), the connecting step (S2), the covering step (S3), the pressing step (S4), the finishing step (S5), the dipping step (S6), cutting Step S7 is performed in turn. (See FIG. 12).

상기 성형공정(S1)은 다시 1차 성형단계(sp1), 2차 성형단계(sp2), 3차 성형단계(sp3), 4차 성형단계(sp4)로 세분화된다.The molding process S1 is further subdivided into a first molding step sp1, a second molding step sp2, a third molding step sp3, and a fourth molding step sp4.

여기서, 상기 각 성형단계에서는 서로 교합되는 한쌍의 성형롤러로 구성되어 각 단계별로 구비된 각 롤러유닛을 순차적으로 통과하면서 모재가 연속적으로 성형되는데, 각각 성형단계에 대해서 상세히 설명하면 다음과 같다.Here, in each of the forming step is composed of a pair of forming rollers to be interlocked with each other, the base material is continuously formed while sequentially passing through each roller unit provided in each step, each of the forming step will be described in detail as follows.

우선, 1차 성형단계(sp1)에서는, 도 2에 나타난 것과 같이 평밴드형태의 모재(母材)(100)가 상부롤러(12) 및 하부롤러(14)로 구성된 1차 성형롤러세트(10)을 거치면서, 모재(100)의 좌우 양선단이 절곡되어, 모재(100)의 좌측선단에는 낮은 각도로 절곡된 커버부(102)가 형성됨과 동시에, 모재의 우측선단에는 낮은 각도로 절곡된 받침부(104)가 형성된다.First, in the primary forming step (sp1), as shown in Figure 2, a flat band-shaped base material 100 is composed of a primary forming roller set 10 consisting of an upper roller 12 and a lower roller 14 While passing through), both ends of the left and right ends of the base material 100 are bent, and a cover part 102 bent at a low angle is formed at the left end of the base material 100, and at the same time, the right end of the base material is bent at a low angle. The supporting part 104 is formed.

여기서, 상기 커버부(102)는 모재(100)의 선단이 단순히 한번 절곡된 형태로 이루어지고, 상기 받침부(104)는 모재(100)의 선단이 일정간격을 두고 서로 반대방향으로 두 번 절곡된 지그재그 형태로 이루어진다.Here, the cover portion 102 is made of a shape in which the front end of the base material 100 is simply bent once, and the support portion 104 is bent twice in the opposite direction with the front end of the base material 100 at a predetermined interval. It is made in zigzag form.

이어서, 상기 2차 성형단계(sp2)에서는, 도 3에 나타난 것과 같이 상기 모재(100)가 상부롤러(22) 및 하부롤러(24)로 구성된 2차 성형롤러세트(20)을 거치면서 1차 성형단계(sp1)에서와 동일한 절곡위치에서 더욱 깊게 절곡되어 상기 커버부(102) 및 받침부(104)의 절곡각도가 직각이 된다.Subsequently, in the secondary forming step sp2, as shown in FIG. 3, the base material 100 passes through the secondary forming roller set 20 including the upper roller 22 and the lower roller 24. It is bent deeper at the same bending position as in the forming step (spl) so that the bending angles of the cover part 102 and the support part 104 become right angles.

상기 3차 성형단계(sp3)에서는 도 4에 나타난 것과 같이 상기 모재(100)가 상부롤러(32) 및 하부롤러(34)로 구성된 3차 성형롤러세트(30)을 거치면서 상기 모재(100)의 중심이 낮은 각도로 절곡되어 커버부(102)와 받침부(104)가 서로 마주보는 방향으로 배치된다.In the tertiary forming step (sp3), as shown in Figure 4, the base material 100 while passing through the tertiary forming roller set 30 consisting of the upper roller 32 and the lower roller 34, the base material 100 The center of the bent at a low angle is the cover portion 102 and the support portion 104 is disposed in a direction facing each other.

상기 4차 성형단계(sp4)에서는 도 5에 나타난 것과 같이 상기 모재(100)가 상부롤러(42) 및 하부롤러(44)로 구성된 4차 성형롤러세트(40)을 거치면서 상기 모재(100)의 중심이 깊은 각도로 절곡되어 커버부(102)가 받침부(104)가 서로 마주보는 방향으로 근접된다.In the fourth molding step (sp4) as shown in Figure 5 while the base material 100 is passed through the fourth molding roller set 40 consisting of the upper roller 42 and the lower roller 44, the base material 100 The center of the bent at a deep angle so that the cover portion 102 is close to the supporting portion 104 in a direction facing each other.

이어서 진행되는 연접공정(S2)에서는, 도 6에 나타난 것과 같이 상기 모재(100)가 중간에 성형슬릿이 갖추어진 성형블럭(50)의 상기 성형슬릿을 통과하는 과정에서 모재(100)의 중심이 완전히 절곡되어 커버부(102)와 받침부(104)가 서로 연접된다.In the subsequent connecting step (S2), as shown in Figure 6, the base material 100 is the center of the base material 100 in the process of passing through the molding slit of the molding block 50 is provided with a molding slit in the middle The cover portion 102 and the support portion 104 are connected to each other by being completely bent.

그리고, 커버링공정(S3)에서는 도 7에 나타난 것과 같이 앞서 성형공정(S1)에서와 마찬가지로 서로 교합되는 상부롤러(62)와 하부롤러(64)로 이루어진 커버링 롤러세트(60)에 의해 상기 모재(100)의 커버부(102)가 절곡되어 받침부(104)를 감싸도록 하게 된다. In the covering step S3, as shown in FIG. 7, the base material is formed by the covering roller set 60 formed of the upper roller 62 and the lower roller 64 interlocked with each other as in the forming step S1. The cover portion 102 of the 100 is bent to surround the support 104.

압착공정(S4)에서는, 도 8에 나타난 것과 같이 상기 모재(100)의 커버부(102)와 받침부(104)를 서로 압착함으로써 상기 커버부(102)와 받침부(104)가 형합되도록 하는데, 이때에는 서로 치합되는 한쌍의 기어롤러(72)(74)로 이루어진 압착롤러세트(70)을 사용하여, 서로 겹쳐진 모재(100)의 커버부(102)와 받침부(104)를 압착하여 연속되는 요철(凹凸)형태로 굴곡형합함으로써 접합테두리부(104)를 형성하게 된다.In the pressing step S4, as shown in FIG. 8, the cover part 102 and the support part 104 of the base material 100 are pressed together so that the cover part 102 and the support part 104 are joined together. At this time, by using a pressing roller set 70 composed of a pair of gear rollers 72 and 74 meshed with each other, the cover part 102 and the support part 104 of the base material 100 overlapped with each other are compressed to be continuous. The bent edge portion 104 is formed by bending in a concave-convex shape.

여기서, 상기 각 기어롤러(72)(74)는 교합면에 치형이 형성된 구조로 이루어지며 각 기어롤러(72)(74)의 치형이 서로 치합됨으로써 양 기어롤러(72)(74) 사이를 통과하는 커버부(102)와 받침부(104)가 치형에 눌리어 굴곡형합되는 것이다.Here, each of the gear rollers 72 and 74 has a structure in which teeth are formed on the occlusal surface, and teeth of each gear rollers 72 and 74 pass through the two gear rollers 72 and 74 by engaging with each other. The cover portion 102 and the support portion 104 are pressed against the teeth and are bent into shape.

또한, 상기 압착롤러세트(70)의 양 기어롤러(72)(74)는 각 성형단계에서 사용되는 성형롤러세트의 성형롤러가 세로로 세워져서 배치되는 것과 달리 수평으로 배치됨으로써 커버부(102)와 받침부(104)에 대한 압착 작업이 정밀하게 이루어지게된다.In addition, both gear rollers 72 and 74 of the pressing roller set 70 is horizontally arranged, unlike the forming rollers of the forming roller set used in each forming step is arranged vertically to cover the cover 102 And the pressing operation for the support 104 is made precisely.

이와 같이 커버부(102)가 받침부(104)를 감싼구조에서 서로 압착되어 요철형태로 굴곡형합되면, 단순한 평면형태로 연접되는 종래기술에 비해 접합강도가 높아지게 된다.As such, when the cover part 102 is compressed to each other in a structure surrounding the support part 104 and is bent into a concave-convex shape, the joining strength is higher than that of the conventional art that is connected in a simple planar shape.

그리고, 압착공정(S4)을 마친 후에는 1, 2차 마감단계로 이루어진 마감공정(S5)을 거치게 되는데, 1차 마감단계(sc1)에서는 모재(100)의 접합테두리부(106)가 도 9에 나타난 것과 같이 한쌍의 수평압박롤러(82)(84)로 구성된 수평압박롤러세트(80)에 의해 아래로 구부러지게 된다.Then, after finishing the pressing process (S4) is subjected to the finishing process (S5) consisting of the first and second finishing steps, in the first finishing step (sc1), the edges of the joint 106 of the base material 100 is shown in Figure 9 As shown in the figure, it is bent down by the horizontal pressing roller set 80 composed of a pair of horizontal pressing rollers 82 and 84.

이어서, 2차 마감단계(sc2)에서는 도 10에 나타난 것과 같이 상기 접합테두리부(106)가 재차 한쌍의 상하 압박롤러(92)(94)로 구성된 수직 압박롤러세트(90)에 의해 아래로 눌리어 마감됨으로써 단면상으로는 완전한 튜브의 형태로 이루어지게 된다.Subsequently, in the second finishing step (sc2), as shown in FIG. 10, the joining edge portion 106 is pressed down by the vertical pressing roller set 90 composed of a pair of upper and lower pressing rollers 92 and 94 again. The rear finish results in a complete tube in cross section.

이어서, 모재(100)를 디핑하여 접합테두리부(106)를 구성하는 커버부(102)와 받침부(104)가 완전히 접합되도록 하는 디핑공정(S6) 및 연속되는 모재(100)를 일정한 길이만큼 절단하는 절단공정(S7)을 거치게 됨으로써 최종적으로 튜브가 완성된다.Subsequently, the dipping process (S6) and the continuous base material (100) for dipping the base material (100) so that the cover part (102) constituting the joining edge part (106) and the support part (104) are completely joined by a predetermined length. By passing through the cutting step (S7) to cut the tube is finally completed.

상술한 바와 같은 본 발명에 따른 열교환기용 튜브 제조방법은 도 11 및 도 12를 통하여 전체적으로 파악할 수 있다.
The method for manufacturing a heat exchanger tube according to the present invention as described above can be understood as a whole through FIGS. 11 and 12.

10: 1차 성형롤러세트 20: 2차 성형롤러세트
30: 3차 성형롤러세트 40: 4차 성형롤러세트
50: 성형블럭 60: 커버링 롤러세트
70: 압착롤러세트 80: 수평압박롤러세트
90: 수직압박롤러세트 100: 모재
102: 커버부 104: 받침부 10: 1st forming roller set 20: 2nd forming roller set
30: 3rd forming roller set 40: 4th forming roller set
50: forming block 60: covering roller set
70: pressing roller set 80: horizontal pressing roller set
90: vertical pressing roller set 100: base material
102: cover portion 104: support portion

Claims (5)

평판밴드형태의 모재의 좌측선단을 절곡하여 커버부를 형성하고, 상기 모재의 우측선단을 절곡하여 받침부를 형성하며, 상기 모재의 중심을 낮은 각도로 절곡하는 성형공정과,
상기 성형공정에 이어서 모재의 중심을 완전히 절곡하여 상기 커버부와 받침부가 연접되도록 하는 연접공정과,
상기 연접공정에 이어서 모재의 커버부를 절곡하여 받침부를 감싸도록 하는 커버링공정과,
상기 커버링공정에 이어서 모재의 커버부와 받침부를 서로 압착함으로써 상기 커버부와 받침부가 형합되도록 하는 압착공정
을 포함하여 이루어지며,

상기 압착공정에서는
서로 치합되는 한쌍의 기어롤러로 이루어진 압착롤러세트를 사용하여, 서로 겹쳐진 모재의 커버부와 받침부를 압착하여 연속되는 요철(凹凸)형태로 굴곡성형함으로써 접합테두리부를 형성하는 것
을 특징으로 하는 열교환기의 튜브 제조방법.

Forming a cover part by bending the left end of the base material in the form of a flat band, forming a supporting part by bending the right end of the base material, and forming a center of the base material at a low angle;
A connecting step of completely bending the center of the base material following the forming step so that the cover part and the supporting part are connected;
A covering step of bending the cover part of the base material to enclose the supporting part following the connecting step;
A pressing process for pressing the cover part and the support part of the base material together so that the cover part and the support part are joined after the covering step.
, ≪ / RTI >

In the crimping process
Forming a joining edge part by pressing and bending the cover part and the support part of the base material overlapped with each other using a compression roller set composed of a pair of gear rollers engaged with each other.
Tube manufacturing method of the heat exchanger characterized in that.

제1항에 있어서,
상기 성형공정은
상기 모재의 좌측선단을 낮은 각도로 단순절곡하여 평판형태의 커버부가 형성되도록 함과 동시에, 상기 모재의 우측선단을 낮은 각도로 복합절곡하여 지그재그 형태의 받침부가 형성되도록 하는 1차 성형단계와,
상기 모재의 커버부와 받침부의 절곡각도가 직각이 되도록 하는 2차 성형단계와,
상기 2차성형된 모재의 중심을 낮은 각도로 절곡하여 커버부와 받침부가 서로 마주보는 방향으로 배치되도록 하는 3차 성형단계와,
상기 3차성형된 모재의 중심을 깊은 각도로 절곡하여 커버부가 받침부가 서로 마주보는 방향으로 근접되도록 하는 4차 성형단계
로 이루어지는 것을 특징으로 하는 열교환기의 튜브 제조방법.
The method of claim 1,
The molding process
A first molding step of simply bending the left end of the base material at a low angle to form a flat cover part, and simultaneously forming a zig-zag shaped support part by complex bending the right end of the base material at a low angle;
A secondary molding step of bending angles of the cover part and the support part of the base material to be perpendicular to each other;
A third molding step of bending the center of the secondary molded base material at a low angle to arrange the cover part and the supporting part in a direction facing each other;
The fourth molding step of bending the center of the tertiary molded base material at a deep angle so that the cover portion is close to the support parts facing each other
Method for producing a tube of heat exchanger, characterized in that consisting of.
제2항에 있어서,
상기 성형공정에서는
서로 교합되는 한쌍의 성형롤러로 구성되어 각 단계별로 구비된 롤러세트에 의해 모재가 성형되는 것
을 특징으로 하는 열교환기의 튜브 제조방법
The method of claim 2,
In the molding process
Composed of a pair of forming rollers interlocked with each other to form the base material by a set of rollers provided in each step
Tube manufacturing method of heat exchanger characterized in that
제1항에 있어서,
상기 연접공정에서는
중간에 성형슬릿이 갖추어진 성형블럭에 의해, 상기 모재가 상기 성형슬릿을 통과하는 과정에서 모재의 중심이 절곡되어 커버부와 받침부가 서로 연접되는 것
을 특징으로 하는 열교환기의 튜브 제조방법.
The method of claim 1,
In the connection process
By the forming block equipped with a molding slit in the middle, the center of the base material is bent in the process of passing the base material through the forming slit, the cover portion and the supporting portion are connected to each other
Tube manufacturing method of the heat exchanger characterized in that.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103785768A (en) * 2014-02-11 2014-05-14 常熟市林芝电热器件有限公司 Roll compacting device of heat conduction pipe of heating core of PTC heater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109433879A (en) * 2018-12-21 2019-03-08 天长市福骏金属制品有限公司 A kind of processing method of bridge cover plate hemmer and bridge cover plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007120888A (en) * 2005-10-28 2007-05-17 Denso Corp Tube for heat exchanger and its manufacturing method
US20090028848A1 (en) * 2007-06-25 2009-01-29 Esbatech Ag Sequence based engineering and optimization of single chain antibodies
US20100288481A1 (en) * 2006-01-19 2010-11-18 Werner Zobel Flat tube, flat tube heat exchanger, and method of manufacturing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007120888A (en) * 2005-10-28 2007-05-17 Denso Corp Tube for heat exchanger and its manufacturing method
US20100288481A1 (en) * 2006-01-19 2010-11-18 Werner Zobel Flat tube, flat tube heat exchanger, and method of manufacturing same
US20090028848A1 (en) * 2007-06-25 2009-01-29 Esbatech Ag Sequence based engineering and optimization of single chain antibodies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103785768A (en) * 2014-02-11 2014-05-14 常熟市林芝电热器件有限公司 Roll compacting device of heat conduction pipe of heating core of PTC heater
CN103785768B (en) * 2014-02-11 2015-07-01 常熟市林芝电热器件有限公司 Roll compacting device of heat conduction pipe of heating core of PTC heater

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