KR910005063B1 - Method connecting pipes of tieing up types - Google Patents

Method connecting pipes of tieing up types Download PDF

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Publication number
KR910005063B1
KR910005063B1 KR1019890000365A KR890000365A KR910005063B1 KR 910005063 B1 KR910005063 B1 KR 910005063B1 KR 1019890000365 A KR1019890000365 A KR 1019890000365A KR 890000365 A KR890000365 A KR 890000365A KR 910005063 B1 KR910005063 B1 KR 910005063B1
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South Korea
Prior art keywords
pipe
mold
joint
inertia
straight pipe
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KR1019890000365A
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Korean (ko)
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KR900012033A (en
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김종석
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미래화학 주식회사
원성환
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A cylinderical opening section (4) is formed to that a core (3') for molding pipe of an inner mold (3) and tip (1') for molding pipe of an outer mold (1) respectively correspond with oute and inner diameters of straight pipe (2). A length of the core (3') for molding pipe is longer than the tip (1'). The space (5) between the inner and outer molds is injected with synthetic resin to form a pipe connection integral with the straight pipe (2) inserted to the core (3').

Description

상수도용 폴리에치렌관의 죔식이음관 접합방법Joining method of fastening joint pipe of polyethylene pipe for water supply

제1도는 하나의 폴리에치렌관과 다른 폴리에치렌관을 죔식이음관으로 연결하는 상태의 단면도.1 is a cross-sectional view of a state in which one poly ethylene pipe and another poly ethylene pipe are connected by a fastening pipe.

제2도는 하나의 폴리에치렌관의 일단에 죔식이음관을 용착시키고 용착된 죔식이음관에 다른 폴리에치렌관을 연결하는 상태도.Figure 2 is a state in which one end of one poly-etching pipe welds the joint pipe and the other welded joint pipe to the poly-ethylene pipe.

제3도는 일측에 죔식이음관이 일체로 성형된 본 발명의 방법에 의해 제조된 폴리에치렌관의 단면도.3 is a cross-sectional view of a polyethylene pipe produced by the method of the present invention in which the clamping pipe is integrally molded on one side.

제4도는 본 발명의 관체를 성형시키는 상태의 단면도.4 is a cross-sectional view of a state of forming the tubular body of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 외금형 2 : 직관1: external mold 2: intuition

3 : 내금형 4 : 원통형개구부3: inner mold 4: cylindrical opening

5 : 공간부 6 : 이음관5: space part 6: joint pipe

본 발명은 상수도용 폴리에치렌관에 죔식이음관을 접합하는 방법에 관한 것이다. 상수도용 폴리에치렌관(KSM 3408)은 압출기에 의해 압출성형시키는 것으로 하나의 폴리에치렌관과 다른 폴리에치렌관을 접속시키기 위하여는 이음관(KSM 3411)이 이용된다. 이음관은 이음관과 폴리에치렌관의 접속방법에 따라 용착식 이음관과 죔식이음관으로 나뉘는데 본 발명은 특히 죔식이음관에 관한 것이다. 폴리에치렌으로 된 주관과 주관을 죔식이음관으로 연결하는 방법이 첨부된 도면 제1도에 도시되어 있다.The present invention relates to a method of joining a fastening pipe to a polyethylene pipe for water supply. The water-soluble polyethylene pipe (KSM 3408) is extruded by an extruder, and a joint pipe (KSM 3411) is used to connect one polyethylene pipe and another polyethylene pipe. The joint pipe is divided into a weldable joint pipe and a fastening joint pipe according to the connection method of the joint pipe and the poly ethylene pipe, and the present invention relates in particular to the joint pipe. A method of connecting the main pipe and the main pipe made of poly ethylene with a fastening pipe is shown in FIG.

이와 같은 주관과 주관을 양수이음관으로 연결하게되면 이음관의 제조를 위한 윈자재의 소모가 클뿐아니라 잇기작업을 이중으로 수행하여야 하는 불편이 있으므로 이음관의 일측을 주관에 접합시키는 방법이 안출되었다.When the main pipe and the main pipe is connected to the positive water pipe, the consumption of the wind material for the manufacture of the pipe is not only large, but also the inconvenience of having to perform a double connection work was proposed a method of joining one side of the pipe to the main pipe.

이와 같은 방법이 제2도에 도시되어 있다. 즉, 폴리에치렌으로 된 주관의 일단에 이음관을 접합시키되 그 접합면을 가열하여 용착시키는 것이다. 폴리에치렌으로 성형된 제품은 접착이 불가능하므로 이와 같이 용착시키는 수밖에 없었다. 그렇다고 현실적으로 압출방법에 의해서만 제조될 수 있는 주관과 사출방법에 의해서만 제조될 수 있는 이음관은 이들을 한꺼번에 성형시킬수도 없으니 제2도에 도시된 바와 같이 접합하지 않으면 안되었던 것이다. 그러나, 제2도에 도시된 바와 같이 접합하려면 접합되는 부위가 균일한 평면을 유지하여야 하므로 접합부위를 면삭하여야 하고 면삭된 접합부위를 일정한 온도로 서서히 가열한 후 가열된 접합면을 압접시킨 후 서서히 식히므로 제2도와 같이 이음관이 접합된 관체를 얻을 수 있는 것이다. 그런데 이와 같은 접합공정을 수행하려면 면삭, 가열, 접합, 접합된 상태에서 완전히 냉각될때까지 흔들리지 않도록 하는 고정 및 냉각등의 공적을 필요로 할뿐 아니라 이러한 공정을 수행키 위한 면삭장치, 가열장치, 고정장치 및 냉각장치를 구비한 융착기를 마련하지 않으면 안되어 생산능률이 나쁠뿐 아니라 생산비를 앙등시키는 원인이 되어왔던 것이다. 뿐만 아니라 드물게는 접합면상에 균열이 발생하여 누수의 현상마저 있었던 것이다.This method is shown in FIG. In other words, the joint pipe is joined to one end of the main pipe made of polyethylene, and the joint surface is heated and welded. Products molded of polyethylene were not able to be bonded and thus had to be welded in this way. However, in reality, the main pipe, which can only be manufactured by the extrusion method, and the joint pipe, which can be manufactured only by the injection method, cannot be molded at a time, so they must be joined as shown in FIG. However, as shown in FIG. 2, in order to bond, the jointed portion must maintain a uniform plane, and the jointed portion must be grounded, and then the heated jointed portion is gradually heated to a constant temperature, and then the heated jointed surface is pressed and then gradually As it cools down, it is possible to obtain a tube body in which a joint pipe is joined as shown in FIG. However, to perform such a bonding process requires not only achievements such as grinding, heating, joining, and fixing and cooling that do not shake until it is completely cooled in the bonded state, but also the grinding apparatus, heating device, and fixing for performing such a process. A fusion machine equipped with a device and a cooling device has to be provided, which causes not only poor production efficiency but also an increase in production costs. In addition, rarely, there was a leakage phenomenon due to cracks on the joint surface.

이에 본 발명은 제2도에 도시된 바와 같은 관체에 결점을 제거하고 접합이 완전하여 누수의 염려가 없을뿐 아니라 열접합을 위한 공정을 생략하여 생산비를 절감하며, 나아가 고가의 융착기를 필요로 하지 아니하여 설비투자를 감소시킬수 있도록 한것인바, 이를 상세히 설명하면 다음과 같다.Therefore, the present invention eliminates the defects in the pipe as shown in FIG. 2 and completes the bonding, so that there is no fear of leakage, and also the production cost is reduced by omitting the process for thermal bonding, and furthermore, the expensive welding machine is not required. In other words, it is to reduce the capital investment, which will be described in detail as follows.

외금형(1)과 내금형(3)으로 된 공지의 이음관 사출성형용 금형에 있어서, 내금형(3)의 관성형용둥근막대(3)와 외금형(1)외 관성형부선단(1')사이에 원통형개구부(4)를 형성시킨다. 원통형개구부(4)의 외경 즉, 외금형(1)의 관성형부선단(1')의 내경은 직관(2)의 외경에 대응하도록 형성시키고, 원통형개구부(4)의 내경 즉, 내금형(3)의 관성형용둥근막대(3')의 외경을 직관(2)의 내경에 대응하도록 형성시킨다.In the known joint pipe injection molding dies of the outer mold (1) and the inner mold (3), the round bar (3) for inertia forming of the inner mold (3) and the end portion of the outer mold (1) of the outer mold (1 ') The cylindrical opening 4 is formed between the holes. The outer diameter of the cylindrical opening 4, that is, the inner diameter of the inertia tip 1 'of the outer mold 1 is formed to correspond to the outer diameter of the straight pipe 2, and the inner diameter of the cylindrical opening 4, i.e., the inner mold 3 The outer diameter of the inertia round bar (3 ') is formed to correspond to the inner diameter of the straight pipe (2).

그리고 내금형(3)의 관성형용둥근막대(3')의 길이는 외금형(1)의 관성형부선단(1')의 길이보다 휠씬 길게형성시킨다. 그리하여 제4도에 도시된 바와 같이 내금형(3)의 관성형용둥근막대(3')에 직관(2)을 끼우고 외금형(1)을 닫으므로써 내,외금형의 공간부(5)에 합성수지를 사출할 수 있게하되, 합성수지가 원통형개구부(4)주위로 누출되지 아니하도록 함과 동시에 내외금형의 공간부(5)에 사출되는 합성수지가 내금형(3)의 관성형용둥근막대(3')외면에 접하여지도록 한다.And the length of the inertia mold round bar (3 ') of the inner mold (3) is formed to be much longer than the length of the inertial end portion (1') of the outer mold (1). Thus, as shown in FIG. 4, by inserting the straight pipe 2 into the inertia mold round bar 3 'of the inner mold 3 and closing the outer mold 1, the inner and outer mold spaces 5 are closed. Synthetic resin can be injected, but the synthetic resin is not leaked around the cylindrical opening (4) and at the same time the synthetic resin injected into the space (5) of the inner and outer molds is inertial molten rod of the inner mold (3 ') Make contact with the outer surface.

이와 같이 형성시킨 금형의 내금형 관성형용둥근막대(3')에 직관(2)을 끼우고 외금형(1)을 닫은후 내외금형사이의 공간부(5)에 합성수지를 사출하게 되면, 제3도에 도시된 바와 같이 공간부(5)에 사출된 합성수지가 이음관(6)의 형상으로 성형됨과 동시에 직관(2)과 일체로 성형되어 직관(2)과 이음관(6)은 완전한 결합상태를 이루게된다.When inserting the straight pipe (2) to the inner mold inertia round rod (3 ') of the mold formed in this way, closes the outer mold (1), and then injected the synthetic resin into the space (5) between the inner and outer molds, As shown in the figure, the synthetic resin injected into the space part 5 is molded into the shape of the joint pipe 6 and simultaneously molded together with the straight pipe 2 so that the straight pipe 2 and the joint pipe 6 are in a completely coupled state. Will come true.

이와 같은 본 발명의 접합방법에 의해 접합된 이음관(6)과 직관(2)의 접합은 그 접합이 완전하여 접합부위가 분리되거나 누출구멍이 생길 염려가 없어 관체의 설치후 관내 유통물이 누출될 염려가 없으며, 접합부위가 파절될 염려가 없으며, 특히 이음관(6)과 직관(2)을 접합시키기 위한 고가의 융착기를 설치할 필요가 없어 설비비의 투자룰 감소시킬수 있고, 이음관(6)과 직관(2)을 접합하기 위한 면삭, 가열, 고정 및 냉각공정을 생략할 수 있어 설치비를 대폭 절감할 수 있는 효과가 있다.The joint of the joint pipe 6 and the straight pipe 2 joined by the joining method of the present invention is completely joined and there is no fear of separation of the joint or leaking holes. There is no fear of breakage, and there is no fear of breakage of the joint, and there is no need to install an expensive welding machine for joining the joint pipe 6 and the straight pipe 2, thereby reducing the investment cost of equipment cost, and the joint pipe 6 Surface, heating, fixing and cooling process for joining the straight pipe (2) can be omitted, there is an effect that can significantly reduce the installation cost.

Claims (1)

외금형(1)과 내금형(3)으로 된 공지의 이음관사출성형용 금형에 있어서, 내금형(3)의 관성형용둥근막대(3')와 외금형(1)의 관성형부선단(1') 직관(2)의 내외경에 대응하는 칫수를 갖는 원통형개구부(4)를 형성시키되, 관성형용둥근막대(3')의 길이를 관성형부선단(1')의 길이보다 길게 형성시키고, 둥근막대(3')에 직관(2)을 끼우고 외금형(1)을 닫은 후 내외금형의 공간부(5)에 합성수지를 사출하여 직관(2)에 이음관을 일체로 형성시킴을 특징으로하는 상수도용 폴리에치렌관의 죔식이음관 접합방법.In the well-known injection pipe injection molding die which consists of the outer mold (1) and the inner mold (3), the inertia round end (3 ') of the inner mold (3) and the inertia part end part (1) of the outer mold (1) ') A cylindrical opening 4 having a dimension corresponding to the inner and outer diameters of the straight pipe 2 is formed, and the length of the inertia round rod 3' is formed longer than the length of the inertial end 1 ', and rounded. Inserting a straight pipe (2) to the rod (3 ') and closes the outer mold (1), and then injecting a synthetic resin into the space (5) of the inner and outer molds to form a joint pipe in the straight pipe (2) integrally Joining method of fastening joint pipe of polyethylene pipe for water supply.
KR1019890000365A 1989-01-14 1989-01-14 Method connecting pipes of tieing up types KR910005063B1 (en)

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KR1019890000365A KR910005063B1 (en) 1989-01-14 1989-01-14 Method connecting pipes of tieing up types

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KR910005063B1 true KR910005063B1 (en) 1991-07-22

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