KR20020031987A - Multi layered pipe and its manufacturing device - Google Patents

Multi layered pipe and its manufacturing device Download PDF

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Publication number
KR20020031987A
KR20020031987A KR1020000062809A KR20000062809A KR20020031987A KR 20020031987 A KR20020031987 A KR 20020031987A KR 1020000062809 A KR1020000062809 A KR 1020000062809A KR 20000062809 A KR20000062809 A KR 20000062809A KR 20020031987 A KR20020031987 A KR 20020031987A
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KR
South Korea
Prior art keywords
synthetic resin
metal tube
holes
tube
porous metal
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KR1020000062809A
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Korean (ko)
Inventor
김고신
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김고신
우방공업 주식회사
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Priority to KR1020000062809A priority Critical patent/KR20020031987A/en
Publication of KR20020031987A publication Critical patent/KR20020031987A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/14Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/003Rigid pipes with a rectangular cross-section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A multilayer pipe and a manufacturing method thereof is provided to enhance a durability and an anti-corrosiveness by forming a synthetic resin at an inner and outer circumference surfaces of a metal pipe simultaneously. CONSTITUTION: A multilayer pipe comprises a porous and cylindrical metal pipe(10) and an inner and an outer synthetic resin layers(21) coated at an inner and outer circumference surfaces of the porous and cylindrical metal pipe(10) simultaneously. The inner and outer synthetic resin layers(20,21) are coupled integrally each other through a plurality of through path holes(11). The inner synthetic resin layer(20) is coated at the inner circumference surface of the porous and cylindrical metal pipe(10), and the outer synthetic resin layer(21) is coated at the outer circumference surface porous and cylindrical metal pipe(10). The through path holes(11) are formed at the metal pipe(10), and a spoke wire(12) is formed between the holes(11).

Description

다층관 및 그 제조장치{Multi layered pipe and its manufacturing device}Multi layered pipe and its manufacturing device

본 발명은 다층관 및 그 제조장치에 관한 것으로, 다공성 금속관을 모재로하고 금속관의 내외주연에 합성수지층이 형성되며, 내외 합성수지층은 상호 금속관의 구멍을 통해 일체로 결합되도록 한 다층관에 관한 것이다.The present invention relates to a multilayer tube and a manufacturing apparatus thereof, and to a multilayer tube having a porous metal tube as a base material and having a synthetic resin layer formed on the inner and outer circumferences of the metallic tube, wherein the inner and outer synthetic resin layers are integrally bonded through the holes of the metal tube. .

본 발명은 또한 다공성관의 삽입을 안내하는 삽입공을 가지며 합성수지층을 압출기 출력부에서 안내하는 가이드 부시와 합성수지가 내외층으로 안내되도록 가이드 부시의 삽입공 중앙에 안치되는 코어를 포함하여 다층관을 제조하는 다층관 제조장치에 관한 것이다.The present invention also has an insertion hole for guiding the insertion of the porous tube and includes a guide bush for guiding the synthetic resin layer at the extruder output and a core placed in the center of the insertion hole of the guide bush so that the synthetic resin is guided to the inner and outer layers. The present invention relates to a multilayer pipe manufacturing apparatus to be manufactured.

일반적으로 다층관인 이중관은 금속관의 내면에 합성수지를 분말 코팅하여 내면의 부식을 방지하도록 이루어진다. 이 경우 분말을 이루는 합성수지는 에폭시나 폴리에틸렌 분말을 사용한다. 물론 이를 위하여는 금속관을 예열하여 일정 온도로 높인 다음 분말을 분산 제공하여 코팅토록 하는 방식을 사용한다. 그런데 이러한 방식은 금속의 내면에 분사 노즐을 삽입하여야 분사가 가능하므로 분사를 위한 최소한의 직경이 요구되어 소형관에는 적용할 수 없는 문제점이 있고, 분사로 코팅을 하는 방식이므로 코팅의 품질이 일정치 못하여 내구성이 저하되는 문제점이 있었다.In general, the double tube, which is a multilayer tube, is made of powder coated on the inner surface of the metal tube to prevent corrosion of the inner surface. In this case, the synthetic resin that forms the powder is epoxy or polyethylene powder. Of course, to this end, a method of preheating the metal tube, raising the temperature to a certain temperature, and then dispersing and providing the powder is coated. However, this method requires a minimum diameter for injection because the injection nozzle must be inserted into the inner surface of the metal, which is not applicable to a small pipe. There was a problem that the durability is lowered.

한편 합성수지층을 금속관의 외면에 일체로 성형하는 방식이 알려져 있는바, 이는 금속관을 예열하고 예열한 금속관의 외주면에 압출 플라스틱을 일체로 공급하여 냉각함으로써 금속관의 외주면을 일체로 성형한다. 물론 이 경우 압출플라스틱은 2층 구조를 이루도록 압출 하는바, 금속관과 접하는 부위에는 소위 접착성수지(예를들어 선경사의 상표명(polygule), 모델명(HE910G))을 들 수 있다. 즉, 금속관과 접하는 부위에는 접착성 수지를, 외경부에는 통상의 폴리에틸렌을 이루는 2층의합성수지관이 금속관의 외주면을 감싸는 형태를 이룬다. 이는 금속관에 폴리에틸렌을 직접 결합시키면 폴리에틸렌과 금속과의 열팽창계수가 상이하여 상호 크랙이 발생하여 접착성이 저하되므로, 이를 해소코자 열팽창계수의 차이를 해소시킬 수 있도록 기능하는 접착성 수지를 개발하여 사용하는 것이다. 그러나 이러한 방식은 금속관의 외주면을 코팅하는 방식이어서 금속관의 내주면을 코팅할 수 없는 문제점이 있었다.Meanwhile, a method of integrally forming a synthetic resin layer on an outer surface of a metal tube is known, which preheats the metal tube and integrally forms the outer circumferential surface of the metal tube by supplying and cooling extruded plastic integrally to the outer circumferential surface of the preheated metal tube. Of course, in this case, the extruded plastic is extruded to form a two-layer structure, so that the area in contact with the metal pipe is a so-called adhesive resin (for example, the trademark name (polygule), model name (HE910G) of pretilt). That is, a two-layered synthetic resin tube made of ordinary polyethylene is formed on the outer diameter portion of the adhesive tube at the portion in contact with the metal tube and forms the form surrounding the outer circumferential surface of the metal tube. This is because when the polyethylene is directly bonded to the metal pipe, the thermal expansion coefficient between the polyethylene and the metal is different, so that the mutual cracking occurs and the adhesiveness is lowered. Therefore, an adhesive resin that functions to solve the difference in the thermal expansion coefficient is developed and used. It is. However, this method is a method of coating the outer circumferential surface of the metal tube has a problem that can not be coated on the inner circumferential surface of the metal tube.

본 발명은 이를 해소코자 하는 것으로 본 발명의 목적은 금속관의 내외주연에 동시에 합성수지층을 형성한 다층관 및 그 제조장치를 제공하여 제조가 용이하고 성능이 우수한 다층관 및 그 제조장치를 제공하려는 것이다.It is an object of the present invention to provide a multilayer tube having a synthetic resin layer formed on the inner and outer circumferences of a metal tube and a manufacturing apparatus thereof, and to provide a multilayer tube and a manufacturing apparatus having excellent performance. .

이를 위하여 본 발명은 외주연에 다수의 구멍을 가지는 다공성 금속관을 구비하고, 합성수지가 다공성 금속관의 많은 구멍으로 관통되어 금속관의 내외주연에 도포된 다층관을 제공하고, 이를 제조하기 위한 장치는 다공성 금속관이 삽입되는 압출장치의 가이드 부시와, 가이드 부시의 중앙에 길이방향으로 끼워지는 코어를 포함하는 제조장치를 구비한다.To this end, the present invention is provided with a porous metal tube having a plurality of holes on the outer periphery, and a synthetic resin penetrates through many holes of the porous metal tube to provide a multi-layer tube coated on the inner and outer peripheries of the metal tube, the apparatus for manufacturing the same is a porous metal tube A manufacturing apparatus including a guide bush of the extrusion device to be inserted and a core fitted in the longitudinal direction in the center of the guide bush.

도 1 은 본 발명의 제조 장치를 나타낸 단면도,1 is a cross-sectional view showing a manufacturing apparatus of the present invention,

도 2 는 본 발명의 다층관 일부절결 사시도,2 is a partially cutaway perspective view of the multilayer tube of the present invention;

도 3 은 본 발명의 다른 예를 나타낸 일부절결 사시도,3 is a partially cutaway perspective view showing another example of the present invention;

도 4 는 본 발명의 다층관 요부 확대 단면도이다.4 is an enlarged cross-sectional view of a main portion of a multilayer tube of the present invention.

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

10;다공성 금속관 11;관통구멍10; porous metal tube 11; through hole

12;살 20, 21;합성수지층12; 20, 21 years old; synthetic resin layer

22;용융 합성수지 23;링부22; molten synthetic resin 23; ring portion

30;압출 헤드 31;안내공30; extrusion head 31; guideman

32;배출로 33;가이드 부시32; discharge furnace 33; guide bush

34;코어 35;다이스34; core 35; dice

40;고정 레버40; locking lever

즉, 본 발명은 외주연에 다수의 관통 구멍을 가지는 다공성 금속관, 및That is, the present invention is a porous metal tube having a plurality of through holes on the outer periphery, and

다공성 금속관의 내외주연에 동시에 도포된 내외 합성수지층으로 구성하고,Consists of the inside and outside synthetic resin layer applied to the inner and outer circumference of the porous metal tube at the same time

상기 내외 합성수지층은 상호 다수의 관통 구멍을 통해 일체로 결합된 다층관을 제공하려는 것이다.The inner and outer synthetic resin layers are to provide a multi-layer tube integrally coupled through a plurality of through holes.

본 발명은 또한 압출기의 헤드에 결합되는 압출헤드를 구비하고;The invention also has an extrusion head coupled to the head of the extruder;

압출헤드는 외주연에 다수의 관통 구멍을 가지는 다공성 금속관이 삽입 안내되는 안내공을 가지며 압출기의 용융 합성수지가 배출되는 배출로와 관통되는 가이드 부시와,The extrusion head has a guide hole through which a porous metal tube having a plurality of through holes is inserted into the outer periphery, and the guide bush through which the molten synthetic resin of the extruder is discharged and the guide bush penetrated therein;

가이드 부시의 안내공과 동축으로 위치되어 외경이 금속관의 직경보다 작아 금속관 내부에 일정 두께의 합성수지층을 이루도록 두께를 조정하는 코어와,A core coaxial with the guide hole of the guide bush, the outer diameter of which is smaller than the diameter of the metal tube to adjust the thickness to form a synthetic resin layer having a predetermined thickness inside the metal tube;

상기 코어가 수평을 유지하도록 일단이 코어에 고정되고 압출기의 다공성 금속관 주입 부분에 타단이 고정된 고정레버를 포함하여 구성한 다층관 제조장치를 제공하려는 것이다.One end is fixed to the core so that the core is horizontal, and to provide a multi-layer tube manufacturing apparatus comprising a fixed lever fixed to the other end to the porous metal tube injection portion of the extruder.

이하 본 발명을 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

도 1 은 본 발명의 제조장치의 일 예를 나타낸 단면도로, 외주연에 다수의 관통 구멍(11)을 가지는 다공성 금속관(10)을 구비하고, 압출기의 헤드에 결합되는 압출헤드(30)를 구비하며;1 is a cross-sectional view showing an example of the manufacturing apparatus of the present invention, having a porous metal tube 10 having a plurality of through holes 11 at its outer periphery, and having an extrusion head 30 coupled to the head of an extruder. To;

압출헤드(30)는 외주연에 다수의 관통 구멍(11)을 가지는 다공성 금속관(10)이 삽입 안내되는 안내공(31)을 가지며 압출기의 용융 합성수지(22)가 배출되는 배출로(32)와 관통되는 가이드 부시(33)와,The extrusion head 30 has a guide hole 31 through which the porous metal tube 10 having a plurality of through holes 11 is inserted into the outer periphery thereof, and the discharge passage 32 through which the molten synthetic resin 22 of the extruder is discharged. A guide bush 33 which is penetrated,

가이드 부시(33)의 안내공(31)과 동축으로 위치되어 외경이 금속관(10)의 직경보다 작아 금속관(10) 내부에 일정 두께의 합성수지층(20)을 이루도록 두께를 조정하는 코어(34)와,A core 34 positioned coaxially with the guide hole 31 of the guide bush 33 and having an outer diameter smaller than the diameter of the metal tube 10 to adjust the thickness to form a synthetic resin layer 20 having a predetermined thickness inside the metal tube 10. Wow,

상기 코어(34)가 수평을 유지하도록 일단이 코어(34)에 고정되고 압출기의다공성 금속관(10) 주입 부분에 타단이 고정된 고정레버(40)를 포함하여 구성한다.One end is fixed to the core 34 and the other end is fixed to the injection portion of the porous metal tube 10 of the extruder so that the core 34 is horizontal.

상기 다공성 금속관(10)을 수용하는 압출헤드(30)의 출구측에는 다이스(35)가 있어 형태를 성형하고, 다이스(35)의 중앙에는 코어(34)가 설치되어 고정레버(40)로 고정된다.At the outlet side of the extrusion head 30 that accommodates the porous metal tube 10, a die 35 is formed, and a shape is formed. In the center of the die 35, a core 34 is installed and fixed by a fixed lever 40. .

상기 금속관(10)의 외주연에는 외 합성수지층(21)을 이루고, 내외 합성수지층(20, 21)은 상호 구멍(11)을 통하여 연결되는 링부(23)를 포함하는바, 이는 내외 합성수지층(20,21)이 금속관(10)을 상호 감싸는 형상을 유지하여 긴밀한 결착력을 제공토록 한다. 즉, 금속관(10)의 구멍(11)과 구멍 사이의 살(12) 부분을 내 합성수지층(20), 링부(23) 및 외 합성수지층(21)으로 감싸는 형상을 하도록 구성한다.The outer periphery of the metal tube 10 forms an outer synthetic resin layer 21, and the inner and outer synthetic resin layers 20 and 21 include ring portions 23 connected through mutual holes 11, which are inner and outer synthetic resin layers ( 20 and 21 maintain the shape surrounding the metal tube 10 to provide a close binding force. In other words, the portion of the flesh 12 between the hole 11 and the hole of the metal tube 10 is configured to surround the inner synthetic resin layer 20, the ring portion 23, and the outer synthetic resin layer 21.

도 2 는 본 발명의 다층관의 일 예를 나타낸 일부 절결 사시도로, 외주연에 다수의 관통 구멍(11)을 가지는 원통형 다공성 금속관(10), 및2 is a partially cutaway perspective view showing an example of the multilayer tube of the present invention, a cylindrical porous metal tube 10 having a plurality of through holes 11 on the outer periphery, and

다공성 금속관(10)의 내외주연에 동시에 도포된 내외 합성수지층(20,21)으로 구성하고,Consists of the inner and outer synthetic resin layers (20, 21) applied simultaneously to the inner and outer circumference of the porous metal tube (10),

상기 내외 합성수지층(20, 21)은 상호 다수의 관통 구멍(11)을 통해 일체로 결합된다.The inner and outer synthetic resin layers 20 and 21 are integrally coupled to each other through a plurality of through holes 11.

도 3 은 본 발명의 다층관의 다른 예를 나타낸 일부 절결 사시도로, 외주연에 다수의 관통 구멍(11)을 가지는 사각관형 다공성 금속관(10), 및3 is a partially cutaway perspective view showing another example of the multilayer tube of the present invention, a rectangular tubular porous metal tube 10 having a plurality of through holes 11 at its outer periphery, and

다공성 금속관(10)의 내외주연에 동시에 도포된 내외 합성수지층(20,21)으로 구성하고,Consists of the inner and outer synthetic resin layers (20, 21) applied simultaneously to the inner and outer circumference of the porous metal tube (10),

상기 내외 합성수지층(20, 21)은 상호 다수의 관통 구멍(11)을 통해 일체로결합된다.The inner and outer synthetic resin layers 20 and 21 are integrally coupled to each other through a plurality of through holes 11.

도 4 는 도 3 의 A-A 선 확대 단면도로, 금속관(10)의 내주에는 내 합성수지층(20)이, 외주에는 외 합성수지층(21)이 형성되고, 금속관(10)에는 다수의 관통 구멍(11)을 이루고, 각 구멍(11)사이는 살(12)을 이룬다. 내외 합성수지층(20, 21)은 구멍(11)을 통하여 서로 관통하도록 링부(23)을 두고 상호 긴밀히 결합된다.4 is an enlarged cross-sectional view taken along line AA of FIG. 3, wherein an inner synthetic resin layer 20 is formed at an inner circumference of the metal tube 10, an outer synthetic resin layer 21 is formed at an outer circumference thereof, and a plurality of through holes 11 are formed in the metal tube 10. ), And each hole 11 forms a flesh (12). The inner and outer synthetic resin layers 20 and 21 are closely coupled to each other with the ring part 23 so as to penetrate each other through the holes 11.

이와 같이 구성한 본 발명은 다수의 구멍(11)을 가지는 다공성 금속관(10)을 압출기 헤드(30)의 안내공(31)으로 삽입한다. 이 경우 다공성 금속관(10)은 스트립 판상의 재질(구멍(11)을 가짐)을 관체형으로 예비 포밍하고(예비 포밍 수단의 도시는 생략 함) 고정레버(40)를 통과한 후 양단을 용접하여(용접 수단의 도시는 생략함) 도 1 과 같이 안내공(31)에 삽입된다. 안내공(31)에 삽입된 다공성 금속관(10)(길이방향으로 용접하여 관체형을 이룬 것)으로 배출로(32)를 통하여 용융 합성수지(22)가 이동하고, 이에 따라 다공성 금속관(10)의 외주연 및 구멍(11)을 통하여 내주연으로 이동함으로써 금속관(10)의 내외주연을 감싸게 된다. 또한 다이스(35)대응 부위의 중앙에는 코어(34)가 있고 다이스(35)와 코어(34) 사이를 다공성 금속관(10)이 지나므로, 배출로(32)를 통해 공급되는 용융 합성수지(22)는 다공성 금속관(10)의 안팍을 감싸면서 코어(34)와 다이스(35)에 의하여 내 합성수지층(20) 및 외 합성수지층(21)의 두께를 형성한다.According to the present invention configured as described above, the porous metal tube 10 having the plurality of holes 11 is inserted into the guide hole 31 of the extruder head 30. In this case, the porous metal tube 10 preforms the strip plate-like material (having the holes 11) into a tubular shape (not shown in the preliminary forming means) and passes through the fixing lever 40 to weld both ends thereof. (The illustration of the welding means is omitted.) It is inserted in the guide hole 31 as shown in FIG. The molten synthetic resin 22 is moved through the discharge path 32 to the porous metal tube 10 (welded in the longitudinal direction to form a tubular body) inserted into the guide hole 31, and thus, the porous metal tube 10 The inner and outer circumferences of the metal tube 10 are wrapped by moving to the inner circumference through the outer circumference and the holes 11. In addition, since the core 34 is located at the center of the die 35 corresponding portion and the porous metal tube 10 passes between the die 35 and the core 34, the molten synthetic resin 22 supplied through the discharge path 32. The inside of the porous metal tube 10 while forming the thickness of the inner synthetic resin layer 20 and the outer synthetic resin layer 21 by the core 34 and the die 35.

아울러 다공성 상기 금속관(10)의 내외주연을 감싸는 내외 합성수지층(20, 21)은 도 1 및 도 4 와 같이 상호 구멍(11)을 통하여 연결되는 링부(23)를 포함하는바, 이는 내외 합성수지층(20,21)이 금속관(10)을 상호 감싸는 형상을 유지하여긴밀한 결착력을 제공토록 기능한다. 즉, 금속관(10)의 구멍(11)과 구멍 사이의 살(12) 부분을 내 합성수지층(20), 링부(23) 및 외 합성수지층(21)으로 감싸는 링 고리 연결 형태를 이루며 단단히 이어지는 기능을 수행한다.In addition, the inner and outer synthetic resin layers 20 and 21 surrounding the inner and outer circumferences of the porous metal tube 10 include ring portions 23 connected through mutual holes 11 as shown in FIGS. 1 and 4, which are inner and outer synthetic resin layers. (20, 21) functions to maintain the shape that surrounds the metal tube 10 to provide a close binding force. In other words, the hole 11 of the metal tube 10 and the flesh 12 between the holes to form a ring ring connection that wraps around the inner synthetic resin layer 20, the ring portion 23 and the outer synthetic resin layer 21 and firmly connected function Do this.

이상에서 설명한 본 발명은 전술한 실시예 및 도면에 의해 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

이상과 같이 본 발명의 다층관은 다수의 구멍을 가지는 금속관을 기초로 내외주연에 합성수지층을 형성하므로 합성수지 자체의 특성으로 내구성을 가지고 내부식성을 제공 가능할 뿐만 아니라 중량을 줄여 이동성을 좋게 한다. 또한 다수의 구멍을 가지는 금속관의 내외주연에 형성되는 합성수지층이 구멍을 통하여 연결되므로 별도로 합성수지를 접착시키는 접착제가 필요없어 경제적이고, 구멍과 금속관의 살을 링 고리 형태로 합성수지층이 상호 연이어 감싸는 형상을 이루므로 합성수지층이 얇아도 동일 내구성을 제공 가능하여 경제적이다.As described above, the multilayer tube of the present invention forms a synthetic resin layer on the inner and outer circumferences based on a metal tube having a plurality of holes, thereby providing durability and corrosion resistance as well as reducing weight and improving mobility. In addition, since the synthetic resin layer formed on the inner and outer circumferences of the metal tube having a plurality of holes is connected through the hole, it is economical because there is no need for an adhesive to bond the synthetic resin separately. Since it is possible to provide the same durability even if the synthetic resin layer is thin, it is economical.

또한 본 발명의 다층관 제조장치는 다공성 금속관을 스트립상의 판재로 부터 예비성형하고 마주하는 접합 부위에서 고정레버가 삽입된 후 용접하여 금속관을 완성한 후 압출헤드의 가이드 부시에 연속하여 공급하고, 고정레버에 의하여 다이스의 중앙에 고정되는 코어에 의하여 내외 합성수지층의 두께가 균일하게 다층관을 인라인 형태로 제조 가능케 한다.In addition, the multi-layer tube manufacturing apparatus of the present invention pre-formed the porous metal tube from the plate on the strip and welded after the fixing lever is inserted at the joining site facing the metal pipe to complete the metal tube and continuously supply to the guide bush of the extrusion head, the fixed lever By the core fixed to the center of the die by the thickness of the inner and outer synthetic resin layer makes it possible to manufacture a multi-layer tube in an in-line form.

Claims (2)

외주연에 다수의 관통 구멍(11)을 가지는 다공성 금속관(10), 및Porous metal tube 10 having a plurality of through holes 11 on the outer periphery, and 다공성 금속관(10)의 내외주연에 동시에 도포된 내외 합성수지층(20,21)으로 구성하고,Consists of the inner and outer synthetic resin layers (20, 21) applied simultaneously to the inner and outer circumference of the porous metal tube (10), 상기 내외 합성수지층(20, 21)은 상호 다수의 관통 구멍(11)을 통해 일체로 결합된 것을 특징으로 하는 다층관.The internal and external synthetic resin layer (20, 21) is a multi-layer tube, characterized in that integrally coupled through a plurality of through holes (11). 압출기의 헤드에 결합되는 압출헤드(30)를 구비하고;An extrusion head 30 coupled to the head of the extruder; 압출헤드(30)는 외주연에 다수의 관통 구멍(11)을 가지는 다공성 금속관(10)이 삽입 안내되는 안내공(31)을 가지며 압출기의 용융 합성수지가 배출되는 배출로(32)와 관통되는 가이드 부시(33)와,The extrusion head 30 has a guide hole 31 through which a porous metal tube 10 having a plurality of through holes 11 is inserted into the outer periphery and guides the discharge passage 32 through which the melted synthetic resin of the extruder is discharged. With bush 33, 가이드 부시(33)의 안내공(31)과 동축으로 위치되어 외경이 금속관(10)의 직경보다 작아 금속관(10) 내부에 일정 두께의 합성수지층(20)을 이루도록 두께를 조정하는 코어(34)와,A core 34 positioned coaxially with the guide hole 31 of the guide bush 33 and having an outer diameter smaller than the diameter of the metal tube 10 to adjust the thickness to form a synthetic resin layer 20 having a predetermined thickness inside the metal tube 10. Wow, 상기 코어(34)가 수평을 유지하도록 일단이 코어(34)에 고정되고 압출기의 다공성 금속관(10) 주입 부분에 타단이 고정된 고정레버(40)를 포함하여 구성한 것을 특징으로 하는 다층관 제조장치.One end is fixed to the core 34 so that the core 34 is horizontal, and the other end is fixed to the injection portion of the porous metal tube 10 of the extruder comprising a fixed lever 40, characterized in that it comprises a multi-layer pipe manufacturing apparatus .
KR1020000062809A 2000-10-25 2000-10-25 Multi layered pipe and its manufacturing device KR20020031987A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142321A (en) * 1976-05-21 1977-11-28 Shin Kobe Electric Machinery Synthetic resin pipe with reinforced internal pressure resistance
JPS6364989U (en) * 1986-10-20 1988-04-28
JPH0396786A (en) * 1989-08-08 1991-04-22 Sekisui Chem Co Ltd Composite pipe and manufacture thereof
JPH09133267A (en) * 1995-11-09 1997-05-20 Torii Kasei Kk High-pressure resistant compound pipe and manufacture thereof
KR19980022510U (en) * 1996-10-28 1998-07-25 권윤노 Cylindrical Auxiliary Packing for Pipe End

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142321A (en) * 1976-05-21 1977-11-28 Shin Kobe Electric Machinery Synthetic resin pipe with reinforced internal pressure resistance
JPS6364989U (en) * 1986-10-20 1988-04-28
JPH0396786A (en) * 1989-08-08 1991-04-22 Sekisui Chem Co Ltd Composite pipe and manufacture thereof
JPH09133267A (en) * 1995-11-09 1997-05-20 Torii Kasei Kk High-pressure resistant compound pipe and manufacture thereof
KR19980022510U (en) * 1996-10-28 1998-07-25 권윤노 Cylindrical Auxiliary Packing for Pipe End

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