KR20020074580A - Manufacturing method of strip steel pipe - Google Patents

Manufacturing method of strip steel pipe Download PDF

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Publication number
KR20020074580A
KR20020074580A KR1020010014424A KR20010014424A KR20020074580A KR 20020074580 A KR20020074580 A KR 20020074580A KR 1020010014424 A KR1020010014424 A KR 1020010014424A KR 20010014424 A KR20010014424 A KR 20010014424A KR 20020074580 A KR20020074580 A KR 20020074580A
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KR
South Korea
Prior art keywords
steel strip
metal tube
strip steel
manufacturing
bending
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Application number
KR1020010014424A
Other languages
Korean (ko)
Inventor
이종규
Original Assignee
(주)동서엠.티
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Application filed by (주)동서엠.티 filed Critical (주)동서엠.티
Priority to KR1020010014424A priority Critical patent/KR20020074580A/en
Publication of KR20020074580A publication Critical patent/KR20020074580A/en

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Classifications

    • 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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
    • 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • 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

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

Abstract

PURPOSE: A manufacturing method of a metal pipe is provided to reduce production cost and easily increase working efficiency by continuously straightening out a roll shaped steel strip, cutting and blanking the straightened out steel strip, and then bending the cut and blanked steel strip. CONSTITUTION: The manufacturing method of a metal pipe in which a hollow shaped metal pipe(1) is manufactured by installing a roll shaped steel strip(2) rolled in a certain width at an uncoiler so that the front part of the steel strip is continuously processed, the method comprises the processes of straightening out the front part of the steel strip by passing the steel strip through a plurality of rollers(6) which are vertically rotationally installed; forming convex and concave parts(2b,2c) which are conformable with each other at both ends of the steel strip by blanking and stamping the straightened front part of the steel strip using dies(4); arranging a formed article(2a) of the steel strip formed by the dies(4) at a supporting die(6); and bending the formed article using a plurality of forming members(5) which are radially arranged in such a manner that the forming members are straightly moved around the supporting die(6), thereby conforming the convex part(2b) formed at one end of the formed article to the concave part(2c) formed at the other end of the formed article.

Description

금속관체의 제조방법{MANUFACTURING METHOD OF STRIP STEEL PIPE}Manufacturing method of metal tube {MANUFACTURING METHOD OF STRIP STEEL PIPE}

본 발명은 파이프 형상으로 형성된 중공관과 같은 금속관체의 제조방법에 관한 것으로서, 보다 상세하게는 롤 형상의 스트립스틸을 연속적으로 굳게 펴서 절단 및 블랭킹 가공한 뒤에 이를 벤딩가공함으로써 금속관체를 용이하게 대량 생산하여 생산 단가의 절감과 작업효율을 용이하게 증대할 수 있도록 하는 금속관체의 제조방법에 관한 것이다.The present invention relates to a method for producing a metal tube such as a hollow tube formed in a pipe shape, and more particularly, to roll metal strips in a continuous shape by bending and processing after cutting and blanking the roll-shaped strip steel in a continuous manner. The present invention relates to a method for manufacturing a metal tube to easily reduce production costs and increase work efficiency.

일반적으로 파이프 형상의 중공관인 금속관체는 전자부품, 가전부품, 자동차부품 등에서 전선의 지지구, 호스의 지지구, 토션널댐퍼 등의 케이스 등과 같은 부위에 사용될 수 있는 바, 종래에는 단순히 파이프를 가공하여 사용되었다.In general, the pipe-shaped hollow tube of the metal tube can be used in the parts such as the support of the wire, the support of the hose, the case of the torsional damper, etc. in electronic parts, home appliances, automobile parts, etc. Was used.

그러나 상기 파이프를 가공하여 필요한 금속관체로 사용하기 위해서는 드릴작업, 절단작업 등을 별도로 수행하기 때문에 작업성이 저하된다는 단점이 있다.However, in order to process the pipe and use it as a necessary metal tube, drill work, cutting work, etc. are separately performed, which has a disadvantage in that workability is reduced.

그래서 종래에는 판재를 이용하여 형상으로 가공하는 기술이 출원번호 10-1999-48330(2000년 6월 26일자로 공개됨)으로 공개된 바 있으며, 이는 도 5에 도시한 바와 같이 판재(100)를 가스나 산소 플라즈마 절단 방법으로 프레임플레이너(101)에 의한 절단, 개선 가공을 실시하고, 벤딩롤에 의해 구부러지지않은 판 단부를 미리 구부려 두기 위해 유압프레스(102)에 의하여 단부를 벤딩 가공한다.Thus, conventionally, a technique for processing into a shape using a plate has been disclosed in the application number 10-1999-48330 (published on June 26, 2000), which is a gas plate 100 as shown in FIG. The cutting and improvement processing by the frame planer 101 is performed by the oxygen plasma cutting method, and the end is bent by the hydraulic press 102 in order to bend the end of the plate which is not bent by the bending roll.

그리고 상기 유압프레스(102)에 의해 단부가 벤딩 가공된 판재(100)를 롤벤더(103)로 롤벤딩 가공한 뒤, 용접장치(104)로 간단하게 임시 용접하고, 용접장치(105,106)로 내면부와 외면부를 용접하여 금속관체(100a)를 완성하게 되는 것이다.Then, after bending the sheet material 100, the end of which is bent by the hydraulic press 102 by the roll bending machine 103, the temporary welding is simply performed by the welding device 104, the inner surface of the welding device (105, 106) The metal tube 100a is completed by welding the portion and the outer surface portion.

이렇게 하여 종래에는 두꺼운 판재도 용이하게 금속관체로 제조할 수 있게 된다.In this way, conventionally, a thick plate can be easily manufactured as a metal tube.

그러나 종래에는 판재를 용접장치 등으로 절단, 개선한 뒤에 다수의 벤딩 가공을 실시하고 이를 다른 용접장치로 접합하기 때문에, 연속적인 작업이 쉽지 않기 때문에 작업 효율이 저하될 수 있으며, 설사 연속적인 작업으로 금속관체를 제조하더라도 용접작업의 특성상 신속한 작업을 수행할 수 없어 작업 시간이 많이 소요되며, 이에 따라 작업 효율이 저하된다는 단점이 있다.However, conventionally, since a plurality of bending processes are performed after cutting and improving a plate by a welding device, and the like is bonded to another welding device, continuous work is not easy, and thus work efficiency may be reduced. Even if a metal pipe is manufactured, it can not be performed quickly due to the characteristics of the welding work, which takes a lot of work time, and thus has a disadvantage in that work efficiency is reduced.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 롤 형상으로 말려진 스트립스틸을 굳게 펴서 그 선단부를 절단 및 블랭킹 가공한 뒤에 이를 벤딩 가공함으로써, 연속적인 작업을 실현할 수 있어 금속관체를 용이하게 대량 생산하고, 생산 단가의 절감과 작업효율을 용이하게 증대할 수 있는 금속관체의 제조방법을 제공하는 데 있다.The present invention has been made in order to solve the problems of the prior art as described above, the object of the present invention is to continuously roll the strip steel rolled into a roll shape, cutting and blanking the tip portion thereof and then bending it, thereby continuous operation The present invention provides a method for manufacturing a metal tube body, which can easily realize mass production of metal tube bodies, reduce production costs and increase work efficiency.

이를 실현하기 위하여, 본 발명은 일정한 폭으로 말려진 롤 형상의 스트립스틸을 언코일러에 설치하여 상기 스트립스틸의 선단부를 연속적으로 가공하여 중공형상의 금속관체를 제조하는 것으로 이루어지는 금속관체의 제조방법에 있어서, 상하로 회전 가능하게 설치되는 다수의 롤러 사이로 스트립스틸의 선단부를 곧게 펼침 가공하고, 펼침 가공된 스트립스틸의 선단부를 금형으로 블랭킹 및 타출 가공하여 양단부에 상호 일치하는 볼록부와 오목부를 형성하며, 금형으로 성형된 스트립스틸의 성형품을 지지금형에 배치한 뒤, 상기 지지금형의 중심으로 직선 운동하도록 방사형상으로 배치된 다수의 성형부재를 이용하여 상기 성형품을 절곡 가공하여 성형품의 단부에 형성된 볼록부와 오목부를 상호 일치하는 것으로 이루어지는 금속관체의 제조방법을 제공한다.In order to realize this, the present invention provides a method for producing a metal tube body, which comprises a roll-shaped strip steel rolled to a constant width in an uncoiler to continuously process the tip of the strip steel to produce a hollow metal tube body. In order to straighten the front end of the strip steel between the plurality of rollers rotatably installed up and down, and blanking and outgoing the front end of the unfolded strip steel with a mold to form convex portions and concave portions that coincide with both ends. Convex formed at the end of the molded article by arranging the molded article of the strip steel formed into a mold in the jigs, and then bending the molded article using a plurality of radially arranged molding members so as to linearly move toward the center of the jigs. Manufacture of metal tube consisting of portions and recesses coinciding with each other It provides the law.

도 1은 본 발명에 의한 금속관체의 제조방법을 나타내는 공정도,1 is a process chart showing a manufacturing method of a metal tube according to the present invention;

도 2는 본 발명에 의한 금속관체의 제조방법을 나타내는 개략적인 흐름도,2 is a schematic flowchart illustrating a method of manufacturing a metal tube according to the present invention;

도 3은 본 발명의 제조방법으로 제조된 금속관체의 일 예를 나타내는 사시도,3 is a perspective view showing an example of a metal tube manufactured by the manufacturing method of the present invention;

도 4는 본 발명의 제조방법으로 제조된 금속관체의 다른 예를 나타내는 사시도,4 is a perspective view showing another example of a metal tube manufactured by the manufacturing method of the present invention;

도 5는 종래에 관련하는 금속관체의 제조방법을 나타내는 공정도이다.5 is a process chart showing a method for manufacturing a metal tube according to the related art.

<도면이 주요 부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1,10 : 금속관체 2 : 스트립스틸1,10 metal tube 2: strip steel

2a : 성형품 2b : 볼록부2a: molded article 2b: convex portion

2c : 오목부 3 : 롤러2c: recess 3: roller

4 : 금형 5 : 성형부재4: mold 5: molding member

6 : 지지금형6: jinow type

이하 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 더욱 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

도 1과 도 2는 본 발명에 의한 금속관체의 제조방법을 나타내는 공정도로서, 상기 금속관체(1)는 파이프 형상의 중공관이며, 이는 전자부품, 가전부품, 자동차부품 등에서 전선의 지지구, 호스의 지지구, 토션널댐퍼 등의 케이스 등과 같은 부위에 사용될 수 있는 것이다.1 and 2 is a process chart showing a manufacturing method of a metal tube according to the present invention, the metal tube 1 is a pipe-shaped hollow tube, which is an electronic component, home appliances, automotive parts, etc., support for wires, hoses It can be used in parts such as the case of the support, torsional damper and the like.

상기 금속관체(1)를 대량으로 생산하기 위해서는 연속적인 작업이 수행되도록 하는 것으로서, 일정한 폭으로 말려진 롤 형상의 스트립스틸(2)을 언코일러(미도시)에 설치하여 상기 스트립스틸(2)의 선단부를 펼침, 블랭킹, 타출, 절곡으로 순차적으로 가공하여 중공 형상의 금속관체를 제조하는 것이다.In order to produce a large amount of the metal tube 1, a continuous operation is performed. A roll-shaped strip steel 2 rolled to a predetermined width is installed in an uncoiler (not shown), so that the strip steel 2 The front end portion of the process by sequentially spreading, blanking, punching, bending to form a hollow metal tube.

즉 본 발명에 의한 금속관체의 제조방법은 상기 스트립스틸(2)을 다수의 롤러(3)로 굳게 펼침 가공하게 되고, 계속해서 금형(4)으로 블랭킹 및 타출 가공하게 되며, 다수의 성형부재(5)로 절곡 가공하는 것으로 이루어진다.That is, according to the method of manufacturing a metal tube according to the present invention, the strip steel 2 is firmly expanded by a plurality of rollers 3, and then blanking and casting are performed by a mold 4. 5) consists of bending.

여기서 상기 롤러(3)는 상하로 회전 가능하게 다수개 설치되고, 상기 스트립스틸(2)의 선단부가 다수의 롤러(3) 사이를 통과하면서 곧게 펼침 가공되어 편평하게 펼쳐진다.Here, a plurality of the rollers 3 are rotatably installed up and down, and the front end portion of the strip steel 2 is unfolded straightly while passing through the plurality of rollers 3 to be unfolded flat.

상기 금형(4)은 펼침 가공된 스트립스틸(2)의 선단부를 블랭킹 및 타출 가공하게 되며, 이에 따라 스트립스틸(2)의 선단부의 일부를 일정한 크기로 절단하여 양단부에 상호 일치하는 볼록부(2b)와 오목부(2c)를 보유한 성형품(2a)을 성형하게 된다.The mold 4 is blanked and spun off the tip of the strip steel 2 that has been unfolded, and accordingly cuts a portion of the tip of the strip steel 2 to a predetermined size to coincide with both ends. ) And the molded part 2a which has the recessed part 2c.

상기 금형(4)으로 성형되어 상기 스트립스틸(2)의 선단부로부터 분리된 성형품(2a)은 지지금형(6)에 배치되어 다수의 성형부재(5)에 의하여 절곡 가공되며, 이에 따라 도 3에 도시한 바와 같은 최종 물품인 금속관체(1)가 완성된다.The molded article 2a molded into the mold 4 and separated from the distal end of the strip steel 2 is placed in the support mold 6 and bent by a plurality of molding members 5, and accordingly shown in FIG. The metal tube 1, which is the final article as shown, is completed.

즉 상기 성형부재(5)는 상기 지지금형(6)의 중심으로 직선 운동하도록 방사 형상으로 배치되는 것인바, 상기 성형품(2a)이 지지금형(6)에 배치되면 성형부재(5) 중의 하나가 지지금형(6)으로 접근하여 성형품(2a)의 중앙부를 고정하게 되고, 계속해서 다른 성형부재(5)가 도 1에 도시한 바와 같이 순차적으로 지지금형(6)으로 접근하여 성형품(2a)을 절곡 가공하게 된다.That is, the molding member 5 is disposed radially so as to linearly move toward the center of the support mold 6. When the molded product 2a is disposed on the support mold 6, one of the molding members 5 may be formed. Approaching the support mold 6 to fix the center portion of the molded product 2a, and then another molding member 5 sequentially approaches the support mold 6 as shown in FIG. 1 to access the molded product 2a. Bending process.

그리고 최종적으로 상기 성형부재(5) 중의 하나가 성형품(2a)의 양단부를 눌러주게 되면서 성형품(2a)의 볼록부(2b)와 오목부(2c)가 상호 치합되어 완성품인 금속관체(1)가 완성된다.Finally, one of the molding members 5 presses both ends of the molded product 2a, and the convex part 2b and the concave part 2c of the molded part 2a are mutually engaged to form a metal tube 1 as a finished product. Is completed.

이와 같이 본 발명에 의한 금속관체의 제조방법은 롤형상으로 말려진 스트립스틸(2)을 펼침 가공, 블랭킹 및 타출 가공, 절곡 가공을 순차적으로 수행할 수 있는 바, 하나의 기계로 용이하게 제작할 수 있는 것이다.As described above, in the method of manufacturing a metal tube according to the present invention, the strip steel 2 rolled in a roll shape can be sequentially spread, blanked and punched out, and bent, and can be easily manufactured with one machine. It is.

물론 최종 제품의 금속관체(1)는 절곡 가공된 뒤에 내부 응력으로 인하여 직경이 커지는 방향으로 벌려질려고 하나, 볼록부(2b)와 오목부(2c)의 치합으로 인하여 고정된 상태가 되며, 금속관체(1)를 자동차 부품이나 전자제품에 사용할 경우에 외력으로부터 강한 내구성을 발휘하게 된다.Of course, the metal tube 1 of the final product is bent to open in a direction of increasing diameter due to internal stress after being bent, but is fixed by the engagement of the convex portion 2b and the concave portion 2c. When the tubular body 1 is used for an automobile part or an electronic product, strong durability is exhibited from an external force.

한편 상기 금형(4)을 이용하기 때문에, 스트립스틸로부터 다양한 형상의 성형품(2a)을 제조할 수 있으며, 지지금형(6)과 성형부재(5)의 형상을 다양하게 할 수 있어 도 4에 도시한 바와 같은 금속관체(10)를 제조할 수 있음은 자명하다.On the other hand, since the mold 4 is used, the molded article 2a of various shapes can be manufactured from the strip steel, and the shape of the support mold 6 and the molding member 5 can be varied. Obviously, the metal tube 10 can be manufactured as described above.

이렇게 본 발명에 의한 금속관체의 제조방법은 파이프 형상의 중공체를 용이하게 연속 가공할 수 있으며, 최종적인 제품을 다양하게 연출할 수 있는 것이다.Thus, the method for producing a metal tube according to the present invention can easily process a pipe-shaped hollow body, and can produce a variety of final products.

이상 설명한 바와 같이, 본 발명에 의한 금속관체의 제조방법은 롤 형상으로 말려진 스트립스틸을 굳게 펼치는 펼침 가공하고 금형을 이용하여 스트립스틸로부터 성형품을 성형하여 성형품을 절곡 가공하여 중공형상의 완성품인 금속관체를 제조하기 때문에, 연속적인 작업을 실현할 수 있어 하나의 기계로 용이하게 제작할 수 있으며, 하나의 기계로 금속관체를 성형할 수 있어 금속관체를 대량으로 생산할 수 있고, 금속관체를 대량 생산할 수 있어 생산 단가의 절감과 작업효율을 용이하게 증대할 수 있다는 이점이 있다.As described above, the manufacturing method of the metal tube according to the present invention is a process of unfolding the strip steel rolled in a roll shape firmly and forming a molded product from the strip steel by using a mold to bend the molded product to form a hollow finished metal Since the tube body is manufactured, continuous work can be realized, so it can be easily manufactured by one machine, and the metal tube can be molded by one machine, so that the metal tube can be mass produced, and the metal tube can be mass-produced. There is an advantage that the production cost can be reduced and the work efficiency can be easily increased.

Claims (1)

일정한 폭으로 말려진 롤 형상의 스트립스틸을 언코일러에 설치하여 상기 스트립스틸의 선단부를 연속적으로 가공하여 중공형상의 금속관체를 제조하는 것으로 이루어지는 금속관체의 제조방법에 있어서,In the manufacturing method of the metal tube body which consists of manufacturing a hollow metal tube body by installing the strip-shaped strip steel rolled to a constant width in an uncoiler, and processing the front end part of the said strip steel continuously, 상하로 회전 가능하게 설치되는 다수의 롤러 사이로 스트립스틸의 선단부를 곧게 펼침 가공하고, 펼침 가공된 스트립스틸의 선단부를 금형으로 블랭킹 및 타출 가공하여 양단부에 상호 일치하는 볼록부와 오목부를 형성하며, 금형으로 성형된 스트립스틸의 성형품을 지지금형에 배치한 뒤, 상기 지지금형의 중심으로 직선 운동하도록 방사형상으로 배치된 다수의 성형부재를 이용하여 상기 성형품을 절곡 가공하여 성형품의 단부에 형성된 볼록부와 오목부를 상호 일치하는 것으로 이루어지는 금속관체의 제조방법.Straighten the front end of the strip steel between a plurality of rollers rotatably installed up and down. A convex portion formed at the end of the molded product by bending the molded product by using a plurality of molding members arranged radially so as to linearly move to the center of the support mold after arranging the molded article of the strip steel molded into A method for producing a metal tube comprising concave portions coinciding with each other.
KR1020010014424A 2001-03-20 2001-03-20 Manufacturing method of strip steel pipe KR20020074580A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113787108A (en) * 2021-08-30 2021-12-14 武汉理工大学 Manufacturing method and system of bent pipe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55147440A (en) * 1979-05-07 1980-11-17 Matsushita Electric Works Ltd Working method of thread-less coupling
JPS566746A (en) * 1979-06-29 1981-01-23 Matsushita Electric Works Ltd Working method of coupling
JPS5717340A (en) * 1980-07-04 1982-01-29 Matsushita Electric Works Ltd Method for working of screwless coupling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55147440A (en) * 1979-05-07 1980-11-17 Matsushita Electric Works Ltd Working method of thread-less coupling
JPS566746A (en) * 1979-06-29 1981-01-23 Matsushita Electric Works Ltd Working method of coupling
JPS5717340A (en) * 1980-07-04 1982-01-29 Matsushita Electric Works Ltd Method for working of screwless coupling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113787108A (en) * 2021-08-30 2021-12-14 武汉理工大学 Manufacturing method and system of bent pipe

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