KR20020094579A - Method for pipe forming - Google Patents

Method for pipe forming Download PDF

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Publication number
KR20020094579A
KR20020094579A KR1020010032855A KR20010032855A KR20020094579A KR 20020094579 A KR20020094579 A KR 20020094579A KR 1020010032855 A KR1020010032855 A KR 1020010032855A KR 20010032855 A KR20010032855 A KR 20010032855A KR 20020094579 A KR20020094579 A KR 20020094579A
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KR
South Korea
Prior art keywords
base material
pipe
forming
air conditioning
cold air
Prior art date
Application number
KR1020010032855A
Other languages
Korean (ko)
Inventor
김갑영
Original Assignee
김갑영
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 김갑영 filed Critical 김갑영
Priority to KR1020010032855A priority Critical patent/KR20020094579A/en
Publication of KR20020094579A publication Critical patent/KR20020094579A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26Refrigerant piping

Abstract

PURPOSE: A method for forming an air conditioning pipe is provided to reduce the time and processes for forming by forming an air conditioning pipe through the drawing work and to form a straight small hole in the center of a brass pipe. CONSTITUTION: A first and a second empty materials(10,20) are prepared. The first material is inserted to a hole of the second material. One end portion of the second material is processed by the pointing work. Then, a processed face(30) is formed. The processed face is fixed on a dice(50). A small hole is formed in the processed face by the drawing work.

Description

냉공조용 파이프의 성형 방법{METHOD FOR PIPE FORMING}Forming method of pipe for cold air conditioning {METHOD FOR PIPE FORMING}

본 발명은 냉공조용 파이프에 관한 것으로서, 특히 대구경 파이프의 내부에 소구경 파이프를 삽입하여 이를 인발작업으로 냉공조용 파이프를 성형하는 방법에 관한 것이다.The present invention relates to a cold air-conditioning pipe, and more particularly, to a method for forming a cold-air-conditioning pipe by inserting a small-diameter pipe into a large-diameter pipe and drawing it.

통상적으로, 에어컨, 냉장고 및 콤프레셔, 그리고 자동차 등에 제공되는 냉공조용 동파이프는 작은 직경을, 바람직하게는 0.5∼∼2.0Φ정도의 미세 구멍을 가지며, 또한 적정길이를 필요로 한다.Usually, the copper pipe for cold air conditioning provided to an air conditioner, a refrigerator, a compressor, a motor vehicle, etc. has a small diameter, Preferably it is a micro hole of about 0.5-2.0Φ, and also needs an appropriate length.

한편, 전술한 동파이프에 미세 구멍을 뚫을 시에는 통상 방전가공 방법과 슈퍼드릴 방법에 의하여 뚫게 되는 바, 이는 전기적 영향으로 인하여 산화 부식속도가 촉진됨과 아울러 구멍 면이 매끈하지 못하고 매우 거칠어 구멍이 쉽게 막히는 단점이 있다. 특히, 상기 동파이프의 중심에 미세구멍을 일직선으로 뚫지 못하기 때문에 냉매의 흐름이 원활하지 못하고, 또한 가공 작업이 어려운 문제점이 있다.On the other hand, when the fine hole is drilled in the copper pipe described above, it is usually drilled by the discharge processing method and the super drill method, which promotes the oxidation corrosion rate due to the electrical effect and the hole surface is not smooth and very rough, so that the hole is easy. There is a downside to clogging. In particular, since the fine holes cannot be drilled in the center of the copper pipe in a straight line, the flow of the refrigerant is not smooth, and machining is difficult.

따라서, 상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은 인발작업으로 냉공조용 파이프를 성형하는 방법을 제공함에 있다.Accordingly, an object of the present invention for solving the above problems is to provide a method for forming a cold air conditioning pipe by drawing operation.

본 발명의 다른 목적은 내경에 비해 두께가 10배 이상인 냉공조용 파이프를 성형하는 방법을 제공함에 있다.Another object of the present invention to provide a method for forming a cold air conditioning pipe having a thickness of 10 times or more compared to the inner diameter.

본 발명의 또 다른 목적은 동파이프의 중심에 미세구멍을 일직선으로 뚫을 수 있는 냉공조용 파이프 성형 방법을 제공함에 있다.Still another object of the present invention is to provide a pipe forming method for cold air conditioning, which can straighten micro holes in the center of a copper pipe.

본 발명의 또 다른 목적은 파이프의 내주면을 매끄럽게 가공하여 냉매의 흐름을 원활하게 구현할 수 있는 냉공조용 파이프의 성형 방법을 제공함에 있다.Still another object of the present invention is to provide a method for forming a pipe for cold air conditioning, which can smoothly process an inner circumferential surface of a pipe to smoothly implement a flow of a refrigerant.

상기한 바와 같은 목적을 달성하기 위한 제1 견지에 따른 본 발명은 내부가 비어 있는 원형 단면 형태의 제1,2 모재를 준비한 다음, 상기 제2 모재의 구멍에제1 모재를 삽입하는 과정과; 상기 과정을 거친 제2 모재의 일측 단부를 임내기 작업으로 가공면을 형성한 다음, 상기 제1 모재의 내부에 플러그를 삽입한 후, 상기 가공면을 통상의 다이스에 고정시켜 인발작업으로 미세구멍을 형성하는 과정으로 이루어진 냉공조용 파이프의 성형방법을 구현하였다.The present invention according to the first aspect for achieving the object as described above is to prepare a first, second base material of the circular cross-sectional shape of the hollow inside, and then inserting the first base material in the hole of the second base material; After forming the working surface by pressing the one end of the second base material through the above process, and inserting a plug into the inside of the first base material, the processing surface is fixed to a common die to fine holes by drawing work Implementing a method of forming a cold air conditioning pipe made of a process for forming a.

이때 보다 바람직하기로는, 내경이 2φ이고 외경이 15φ인 냉공조용 동파이프를 성형하는 방법을 구현하였다.At this time, more preferably, a method of forming a copper pipe for cold air conditioning having an inner diameter of 2φ and an outer diameter of 15φ is implemented.

도 1a 내지 도 1d는 본 발명의 바람직한 일 실시 예에 따른 냉공조용 파이프를 인발 작업으로 성형하는 방법을 도시한 도면.1A to 1D are views illustrating a method of forming a cold air conditioning pipe by drawing operation according to an exemplary embodiment of the present invention.

도 2는 도 1에서 도시하고 있는 인발작업에 의해 성형된 냉공조용 파이프의 정면을 보인 도면.Figure 2 is a view showing the front of the cold air conditioning pipe formed by the drawing operation shown in FIG.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10: 제1 모재20: 제2 모재10: first base material 20: second base material

30: 가공면40: 플러그30: machining surface 40: plug

50: 다이스50: dice

이하 본 발명의 바람직한 실시예의 상세한 설명이 첨부된 도면들을 참조하여 설명될 것이다. 하기에서 본 발명을 설명함에 있어서, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다.DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that detailed descriptions of related well-known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

우선 본 발명에서 제안하고자 하는 냉공조용 파이프 성형방법의 개념을 살펴보면, 대구경 파이프의 내부에 소구경 파이프를 삽입한 다음 이를 인발작업으로 내경에 비해 두께가 10배 이상인 냉공조용 동파이프를 성형하는 방법을 제공하고자 하는 것이다.Looking at the concept of the pipe forming method for cold air conditioning proposed in the present invention, inserting a small diameter pipe into the inside of a large diameter pipe and then drawing a copper pipe for cold air conditioning having a thickness of 10 times or more compared to the inner diameter by the drawing operation To provide a way.

즉, 본 발명은 도 2에 도시한 바와 같이 미세구멍을 가지는, 바람직하게는 2φ의 내경을 가지고 외경이 15φ인 동파이프를 성형하는 방법을 제시하고자 하며, 이러한 방법은 후술하는 실시예에 의해 용이하게 이해될 것이다.That is, the present invention intends to provide a method of forming a copper pipe having a micropore, preferably an inner diameter of 2φ and an outer diameter of 15φ, as shown in FIG. Will be understood.

이하, 본 발명의 바람직한 최상의 실시 예에 의거 상세히 설명하겠는 바, 상기 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail based on the best preferred embodiment of the present invention, but the present invention is not limited to the embodiments.

{실시예 1}{Example 1}

우선 도 1a에 도시한 바와 같이, 내경이 2φ인 제1 모재(10)와 외경이 15φ인 제2 모재(20)를 준비한 다음, 상기 제1 모재(10)의 외주면 전체를 가공하여 표면을 매끄럽게 한 후, 이를 도 1b에 도시한 바와 같이 제2 모재(20)의 구멍(20a)에 삽입하였다.First, as shown in FIG. 1A, a first base material 10 having an inner diameter of 2φ and a second base material 20 having an outer diameter of 15φ are prepared, and then the entire outer circumferential surface of the first base material 10 is processed to smooth the surface. Then, it was inserted into the hole 20a of the second base material 20 as shown in FIG. 1B.

이후, 도 1c에 도시한 바와 같이 제1 모재(10)의 끝부분과 제2 모재(20)의 끝부분이 서로 접촉되도록 상기 제2 모재(20)의 끝부분을 임내기(Pointing) 작업으로 가공면(30)을 형성하였다.Subsequently, as shown in FIG. 1C, the end of the second base material 20 may be pointed so that the end portion of the first base material 10 and the end portion of the second base material 20 come into contact with each other. The processing surface 30 was formed.

다음, 도 1d에 도시한 바와 같이 제1 모재(10)의 내부에 플러그(40)를 삽입한 다음, 상기 제2 모재(20)의 외주면에 형성된 가공면(30)을 통상의 다이스(50)에 고정시킨 후, 인발작업을 수행하였다. 그러면, 도 2에 도시한 바와 같이 2φ의 미세구멍(10a)을 가지고 외경이 15φ인 동파이프(100)가 성형되어진다.Next, as shown in FIG. 1D, the plug 40 is inserted into the interior of the first base material 10, and then, the die surface 50 is formed by the processing surface 30 formed on the outer circumferential surface of the second base material 20. After fixing to, a drawing operation was performed. Then, as shown in FIG. 2, the copper pipe 100 having an outer diameter of 15φ with a fine hole 10a of 2φ is formed.

이때, 전술한 플러그는 제1 모재(10)의 내주면에 형성된 요철을 말끔히 제거하여 표면을 매끄럽게 하는 역할을 하며, 이에 따라 냉매의 흐름이 원활하게 이루어지는 효과를 발생시킨다. 한편 상기 다이스(50)는 8∼10°정도로 기울어져 있다.At this time, the above-described plug serves to smoothly remove the irregularities formed on the inner circumferential surface of the first base material 10 to smooth the surface, thereby generating an effect of smoothly flowing the refrigerant. On the other hand, the dice 50 are inclined at about 8 to 10 degrees.

이상으로 살펴본 바와 같이, 본 발명은 인발작업으로 냉공조용 파이프를 성형하므로서 성형 공정 및 시간을 단축시키고, 또한 작업이 용이할 뿐만 아니라 동파이프의 중심에 미세구멍을 일직선으로 뚫을 수 있는 이점이 있다.As described above, the present invention shortens the forming process and time by forming the cold air-conditioning pipe by drawing operation, and also has the advantage that it is easy to work as well as a straight hole in the center of the copper pipe in a straight line. .

특히, 본 발명은 동파이프의 인발작업시 플러그를 삽입하므로서 파이프의 내주면을 매끄럽게 가공할 수 있으며, 이는 냉매의 흐름을 원활하게 하여 효율을 높일 수 있는 상승적인 효과가 있다.In particular, the present invention can smoothly process the inner circumferential surface of the pipe by inserting a plug during the drawing operation of the copper pipe, which has a synergistic effect to increase the efficiency by smoothly flowing the refrigerant.

Claims (3)

냉공조용 파이프의 성형 방법에 있어서,In the molding method of the pipe for cold air conditioning, 내부가 비어 있는 원형 단면 형태의 제1,2 모재(10,20)를 준비한 다음, 상기 제2 모재(20)의 구멍(20a)에 제1 모재(10)를 삽입하는 과정과;Preparing a first and a second base material (10,20) having a circular cross-sectional shape and then inserting the first base material (10) into the hole (20a) of the second base material (20); 상기 과정을 거친 제2 모재(20)의 일측 단부를 임내기 작업으로 가공면(30)을 형성한 다음, 이를 통상의 다이스(50)에 고정시켜 인발작업으로 미세구멍을 형성하는 과정으로 이루어짐을 특징으로 하는 냉공조용 파이프의 성형 방법.After forming the processing surface 30 by impregnating the one end of the second base material 20 undergoes the above process, and then fixing it to a conventional die 50 to form a fine hole by drawing work A method for forming a cold air conditioning pipe. 제1항에 있어서, 상기 제1 모재(10)의 내부에 플러그(40)를 삽입하여 인발작업을 수행하는 과정을 더 포함하는 것을 특징으로 하는 냉공조용 파이프의 성형 방법.The method of claim 1, further comprising the step of inserting a plug (40) into the interior of the first base material (10) to perform a drawing operation. 제1항 또는 제2항에 있어서, 상기 제1 모재(10)의 내경은 0.5∼2.0φ이며, 상기 제2 모재(20)의 내경은 5.0∼15φ임을 특징으로 하는 냉공조용 파이프의 성형 방법.The method of claim 1 or 2, wherein the inner diameter of the first base material 10 is 0.5 to 2.0φ, and the inner diameter of the second base material 20 is 5.0 to 15φ. .
KR1020010032855A 2001-06-12 2001-06-12 Method for pipe forming KR20020094579A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150044400A (en) * 2013-10-16 2015-04-24 넥쌍 Method of producing metallic composite pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150044400A (en) * 2013-10-16 2015-04-24 넥쌍 Method of producing metallic composite pipes

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