KR20200144819A - Method for manufacturing railway sleepers - Google Patents

Method for manufacturing railway sleepers Download PDF

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KR20200144819A
KR20200144819A KR1020190072943A KR20190072943A KR20200144819A KR 20200144819 A KR20200144819 A KR 20200144819A KR 1020190072943 A KR1020190072943 A KR 1020190072943A KR 20190072943 A KR20190072943 A KR 20190072943A KR 20200144819 A KR20200144819 A KR 20200144819A
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South Korea
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polyurethane resin
composite fabric
plastic bag
discharge passage
molded body
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KR1020190072943A
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Korean (ko)
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KR102236667B1 (en
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양승운
이길성
유병민
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주식회사 휴먼컴퍼지트
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/08Impregnating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028Net structure, e.g. spaced apart filaments bonded at the crossing points
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/46Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from different materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B2038/0052Other operations not otherwise provided for
    • B32B2038/0076Curing, vulcanising, cross-linking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02Composition of the impregnated, bonded or embedded layer
    • B32B2260/021Fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00Condition, form or state of the layers or laminate
    • B32B2305/38Meshes, lattices or nets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2375/00Polyureas; Polyurethanes

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

According to the present invention, a method for manufacturing a railway sleeper comprises: a first step of preparing a composite fabric and a polyurethane resin; a second step of stacking the composite fabric on a base plate; a third step of stacking a mesh on top of the stacked composite fabric; a fourth step of covering the stacked composite fabric and mesh with a vinyl bag to seal the same; a fifth step of installing an injection passage in the vinyl bag and installing a discharge passage in the base plate; a sixth step of applying vacuum to the discharge passage and injecting the polyurethane resin through the injection passage to make the polyurethane resin flow into the discharge passage as the polyurethane resin is impregnated in the composite fabric; a seventh step of, when the polyurethane resin is injected by a predetermined amount, stopping the injection of the polyurethane resin and waiting until the polyurethane resin reaches a predetermined thickness as the polyurethane resin is expanded; an eighth step of forming a molded body in which the polyurethane resin is impregnated in the composite fabric by heating and curing the polyurethane resin which has reached the predetermined thickness; a ninth step of withdrawing the molded body by tearing the vinyl bag; and a tenth step of post-processing the molded body. According to the present invention, ride comfort is improved by reducing noise and vibration.

Description

철도침목 제조방법{Method for manufacturing railway sleepers}Method for manufacturing railway sleepers {Method for manufacturing railway sleepers}

본 발명은 철도침목 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a railroad sleeper.

철도침목이란 도상(道床)에 적당한 간격으로 나열하여 그 위에 레일을 깔고 정착시킴으로 레일과 레일 사이의 간격을 정확히 유지시키고, 레일에 가해지는 열차하중을 도상을 통해서 노반(路盤)에 전달하는 목재나 콘크리트재를 말한다.Railroad sleepers are wood or wood that accurately maintains the distance between rails and rails by arranging them at appropriate intervals on the road, laying rails thereon, and transmitting the train load on the rails to the roadbed through the roads. It refers to concrete material.

목재침목은 공급 상의 어려움과 방부제 사용으로 인한 환경문제 및 목재의 부패와 병충해로 인한 내구성 저하의 문제가 발생한다.Wood sleepers suffer from difficulties in supply, environmental problems due to the use of preservatives, and decrease in durability due to decay and pests of wood.

반면, 콘크리트침목은 목재침목과 같은 단점은 없으나, 무거워 설치가 어렵고 완충성 및 가공성이 떨어지는 문제를 가지고 있다.On the other hand, concrete sleepers do not have the same drawbacks as wooden sleepers, but they are heavy and difficult to install, and have problems with poor buffering and workability.

이러한 목재침목과 콘크리트침목의 단점을 보완하기 위하여, 나무의 유연함 및 콘크리트의 내구성을 접목한 플라스틱침목이 만들어지고 있으나, 플라스틱침목 역시 내구성이 그다지 좋지 않아 파손이 자주 일어나고, 그로 인한 유지 보수비용이 여전히 많이 발생하고 있다.In order to compensate for the shortcomings of these wooden and concrete sleepers, plastic sleepers that combine the flexibility of wood and the durability of concrete are being made, but the durability of plastic sleepers is not very good, causing frequent damage, and maintenance costs are still incurred. A lot is happening.

한국등록특허(10-1424683)Korean registered patent (10-1424683)

본 발명의 목적은 목재침목, 콘크리트침목, 플라스틱침목등이 가진 문제점을 해결할 수 있는 신개념의 철도침목 제조방법을 제공하는 데 있다.An object of the present invention is to provide a method for manufacturing a new concept of railroad sleepers that can solve problems with wood sleepers, concrete sleepers, and plastic sleepers.

상기 목적을 달성하기 위한 철도침목 제조방법은,A method of manufacturing a railroad sleeper to achieve the above object,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계;A first step of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계;A second step of laminating the composite fabric on a base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;A third step of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;A fifth step of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리는 제7단계;A seventh step of stopping the injection of the polyurethane resin when the polyurethane resin is injected in a predetermined amount, and waiting until the polyurethane resin expands and reaches a predetermined thickness;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및A ninth step of tearing the plastic bag to take out the molded body; And

상기 성형체를 후가공하는 제10단계를 포함하는 것을 특징으로 한다.It characterized in that it comprises a tenth step of post-processing the molded body.

또한, 상기 목적은,In addition, the above purpose,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계;A first step of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계;A second step of laminating the composite fabric on a base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;A third step of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;A fifth step of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면 전체를 가압하여 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계;When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step of pressing the entire polyurethane resin into a uniform thickness;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및A ninth step of tearing the plastic bag to take out the molded body; And

상기 성형체를 후가공하는 제10단계를 포함하는 철도침목 제조방법에 의해 달성된다.It is achieved by a method for manufacturing a railroad sleeper comprising a tenth step of post-processing the molded body.

또한, 상기 목적은,In addition, the above purpose,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계;A first step of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계;A second step of laminating the composite fabric on a base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;A third step of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;A fifth step of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면을, 상기 폴리우레탄수지의 팽창력에 따라 분할 가압하여, 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계;When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step of dividing and pressing the polyurethane resin according to the expansion force of the polyurethane resin to make the entire polyurethane resin a uniform thickness;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및A ninth step of tearing the plastic bag to take out the molded body; And

상기 성형체를 후가공하는 제10단계를 포함하는 철도침목 제조방법에 의해 달성된다.It is achieved by a method for manufacturing a railroad sleeper comprising a tenth step of post-processing the molded body.

본 발명을 사용하면, 복합재 직물에 폴리우레탄이 합침된 철도침목(이하, “폴리우레탄 철도침목”이라 칭함)을 만들어낼 수 있다.Using the present invention, it is possible to create a railroad sleeper in which polyurethane is impregnated with a composite fabric (hereinafter referred to as "polyurethane railroad sleeper").

폴리우레탄 철도침목은, 철도침목의 경량화를 실현시키며 설치 및 유지보수가 쉽고 충격 흡수 특성을 강화하여 소음 및 진동의 저감 효과로 승차감을 개선시킨다.Polyurethane railroad sleepers realize lighter weight of railroad sleepers, are easy to install and maintain, and enhance the shock absorption characteristics to improve ride comfort by reducing noise and vibration.

또한, 복합재 직물이 보강재 역할을 하여, 내구성이 뛰어나 반영구적으로 사용이 가능하고, 철도 운행 시에 파손이 적어 유지 및 보수비용이 절감된다. 특히, 복합재 직물을 천연섬유로 만들면, 철도침목 파손으로 인한 2차 오염도 발생하지 않는다.In addition, since the composite fabric serves as a reinforcing material, it has excellent durability and can be used semi-permanently, and there is less damage during railroad operation, reducing maintenance and repair costs. In particular, if the composite fabric is made of natural fibers, secondary pollution due to damage to railroad sleepers does not occur.

본 발명은, 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 폴리우레탄수지가 팽창하는 동안, 비닐백 상면 전체를 가압하여 폴리우레탄수지 전체를 균일한 두께로 만들 수 있다. 폴리우레탄수지의 팽창 두께가 전체적으로 균일해지면, 철도침목의 두께를 균일하게 만들기 위해 성형체를 깎는 과정을 생략할 수 있어, 철도침목의 제조시간을 단축시킬 수 있다.In the present invention, the polyurethane resin expands and waits until it reaches a set thickness, but while the polyurethane resin expands, the entire upper surface of the plastic bag is pressed to make the entire polyurethane resin a uniform thickness. When the expanded thickness of the polyurethane resin becomes uniform as a whole, the process of shaving the molded body to make the thickness of the railroad sleeper uniform can be omitted, and thus the manufacturing time of the railroad sleeper can be shortened.

본 발명은, 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 폴리우레탄수지가 팽창하는 동안, 비닐백 상면을, 폴리우레탄수지의 팽창력에 따라 분할 가압하여, 보다 정밀하게 폴리우레탄수지 전체를 균일한 두께로 만들 수 있다. 폴리우레탄수지의 팽창 두께가 전체적으로 균일해지면, 철도침목의 두께를 균일하게 만들기 위해 성형체를 깎는 과정을 생략할 수 있어, 철도침목의 제조시간을 단축시킬 수 있다.The present invention waits until the polyurethane resin expands and reaches the set thickness, but while the polyurethane resin expands, the upper surface of the plastic bag is divided and pressurized according to the expansion force of the polyurethane resin, so that the polyurethane resin is more precisely The whole can be made with a uniform thickness. When the expanded thickness of the polyurethane resin becomes uniform as a whole, the process of shaving the molded body to make the thickness of the railroad sleeper uniform can be omitted, and thus the manufacturing time of the railroad sleeper can be shortened.

도 1은 본 발명의 제1실시예에 따른 철도침목 제조방법을 나타낸 도면이다.
도 2는 도 1에 도시된 철도침목 제조방법을 구현하기 위한 장치를 나타낸 도면이다.
도 3은 본 발명의 제2실시예에 따른 철도침목 제조방법을 나타낸 도면이다.
도 4는 도 3에 도시된 철도침목 제조방법을 구현하기 위한 장치를 나타낸 도면이다.
도 5는 본 발명의 제3실시예에 따른 철도침목 제조방법을 나타낸 도면이다.
도 6은 도 5에 도시된 철도침목 제조방법을 구현하기 위한 장치를 나타낸 도면이다.
1 is a view showing a method of manufacturing a railroad sleeper according to a first embodiment of the present invention.
FIG. 2 is a diagram showing an apparatus for implementing the method of manufacturing a railroad sleeper shown in FIG. 1.
3 is a view showing a method of manufacturing a railroad sleeper according to a second embodiment of the present invention.
FIG. 4 is a diagram showing an apparatus for implementing the method of manufacturing a railroad sleeper shown in FIG. 3.
5 is a view showing a method of manufacturing a railroad sleeper according to a third embodiment of the present invention.
6 is a view showing an apparatus for implementing the method of manufacturing the railway sleeper shown in FIG. 5.

이하, 본 발명의 제1실시예에 따른 철도침목 제조방법을 자세히 설명한다. 도 2를 기본적으로 참조한다. 설명의 편의상, 도 2에서 비닐백 내부에 적층된 복합재 직물과 메쉬가 잘 보이도록, 비닐백 전면을 절개한 상태로 표시하였다. Hereinafter, a method of manufacturing a railroad sleeper according to a first embodiment of the present invention will be described in detail. Reference is basically made to FIG. 2. For convenience of explanation, in FIG. 2, the front of the plastic bag is shown in an incision so that the composite fabric and mesh laminated inside the plastic bag can be clearly seen.

도 1에 도시된 바와 같이, 본 발명의 제1실시예에 따른 철도침목 제조방법은,As shown in Figure 1, the method for manufacturing a railroad sleeper according to the first embodiment of the present invention,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계(S11);A first step (S11) of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계(S12);A second step (S12) of laminating the composite fabric on the base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계(S13);A third step (S13) of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계(S14);A fourth step (S14) of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계(S15);A fifth step (S15) of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계(S16);A sixth step (S16) of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows into the discharge passage while being impregnated into the composite fabric;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리는 제7단계(S17);A seventh step (S17) of stopping the injection of the polyurethane resin and waiting for the polyurethane resin to expand and reach a set thickness when the polyurethane resin is injected in a predetermined amount;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계(S18);An eighth step (S18) of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계(S19);A ninth step (S19) of tearing the plastic bag to take out the molded body;

상기 성형체를 후가공하는 제10단계(S20)로 구성된다.It consists of a tenth step (S20) of post-processing the molded body.

이하, 제1단계(S11)를 설명한다.Hereinafter, the first step (S11) will be described.

복합재 직물(F)을 준비한다. 복합재 직물(F)은 철도침목의 강도 및 강성을 유지한다. 복합재 직물(F)은 탄소섬유 또는, 유리섬유 또는, 천연섬유가 직조되어 만들어진다. 천연섬유로는 마섬유(아마섬유, 황마섬유등), 바잘트 섬유가 있다. 물론, 천연섬유의 종류는 다양할 수 있다.Prepare composite fabric (F). Composite fabric (F) maintains the strength and stiffness of railroad sleepers. The composite fabric (F) is made by woven carbon fiber, glass fiber, or natural fiber. Natural fibers include hemp fiber (flax fiber, jute fiber, etc.) and basalt fiber. Of course, the types of natural fibers can vary.

폴리우레탄수지(U)를 준비한다. 폴리우레탄수지(U)는 폴리프로필렌글리콜(PPG, polypropylene glycol)과 메틸렌디페닐이소시아네이트(MDI, Methylene Diphenyl Isocyanate)가 혼합되어 만들어진다.Prepare polyurethane resin (U). Polyurethane resin (U) is made by mixing polypropylene glycol (PPG) and methylene diphenyl isocyanate (MDI).

이하, 제2단계(S12)를 설명한다.Hereinafter, the second step (S12) will be described.

베이스판(P) 위에 복합재 직물(F)을 적층한다. 적층되는 복합재 직물(F)의 개수는 철도침목의 두께에 따라 결정된다. 베이스판(P)의 우측 하면에는 배출통로(E)를 설치하기 위한 구멍(H2)이 뚫려있다.Laminate the composite fabric (F) on the base plate (P). The number of laminated composite fabrics (F) is determined by the thickness of the railroad sleepers. A hole (H2) for installing the discharge passage (E) is drilled on the lower right side of the base plate (P).

이하, 제3단계(S13)를 설명한다.Hereinafter, the third step (S13) will be described.

적층된 복합재 직물(F)의 맨 위에 메쉬(M)를 적층한다. 메쉬(M)는 비닐백(B)과 복합재 직물(F) 사이로 폴리우레탄수지(U)가 흘러갈 수 있는 통로를 만들어준다.The mesh (M) is laminated on top of the laminated composite fabric (F). The mesh (M) creates a passage through which the polyurethane resin (U) can flow between the plastic bag (B) and the composite fabric (F).

이하, 제4단계(S14)를 설명한다.Hereinafter, the fourth step (S14) will be described.

적층된 복합재 직물(F)과 메쉬(M)를 비닐백(B)으로 덮어 밀봉한다.The laminated composite fabric (F) and mesh (M) are covered with a plastic bag (B) and sealed.

이하, 제5단계(S15)를 설명한다.Hereinafter, the fifth step (S15) will be described.

주입통로(I)로 들어온 폴리우레탄수지(U)가 복합재 직물(F) 전체를 통과하기 위해서, 도 2에 도시된 바와 같이, 구멍(H1)은 비닐백(B)의 좌측 상면에 형성되고, 구멍(H2)은 베이스판(P)의 우측 하면에 형성되어야 하며, 구멍(H1)과 구멍(H2)은 철도침목의 길이만큼 이격되어야 한다.In order for the polyurethane resin (U) entering the injection passage (I) to pass through the entire composite fabric (F), as shown in Figure 2, the hole (H1) is formed on the left upper surface of the plastic bag (B), The hole H2 must be formed on the lower right side of the base plate P, and the hole H1 and the hole H2 must be separated by the length of the railroad sleeper.

비닐백(B)의 좌측 상면에 구멍(H1)을 뚫는다. 주입통로(I)의 일부를 구멍(H1)안에 넣고, 구멍(H1) 주위를 밀봉재로 밀봉한다.Make a hole (H1) in the upper left side of the plastic bag (B). A part of the injection passage (I) is put into the hole (H1), and the area around the hole (H1) is sealed with a sealing material.

베이스판(P)의 구멍(H2)에 배출통로(E)를 넣는다. 구멍(H2) 주위를 밀봉재로 밀봉한다. Insert the discharge passage (E) into the hole (H2) of the base plate (P). Seal around the hole H2 with a sealing material.

이하, 제6단계(S16)를 설명한다.Hereinafter, the sixth step (S16) will be described.

주입통로(I)와 주입기(미도시)를 튜브(미도시)로 연결한다. 배출통로(E)와 진공펌프(미도시)를 튜브(미도시)로 연결한다. The injection passage (I) and the injector (not shown) are connected with a tube (not shown). The discharge passage E and the vacuum pump (not shown) are connected with a tube (not shown).

진공펌프(미도시)가 배출통로(E)에 진공을 작용시킨다.A vacuum pump (not shown) applies a vacuum to the discharge passage E.

주입기(미도시)가 주입통로(I)로 폴리우레탄수지(U)를 주입시킨다.An injector (not shown) injects the polyurethane resin (U) through the injection passage (I).

주입통로(I)로 주입된 폴리우레탄수지(U)가 복합재 직물(F)에 함침되면서, 배출통로(E)로 흘려간다.As the polyurethane resin (U) injected through the injection passage (I) is impregnated into the composite fabric (F), it flows through the discharge passage (E).

이하, 제7단계(S17)를 설명한다.Hereinafter, the seventh step (S17) will be described.

설정된 양의 폴리우레탄수지(U)가 주입되면, 폴리우레탄수지(U)의 주입을 멈춘다. 폴리우레탄수지(U)가 팽창한다. 폴리우레탄수지(U)가 설정된 두께에 도달할 때까지 기다린다. When the set amount of polyurethane resin (U) is injected, the injection of polyurethane resin (U) is stopped. The polyurethane resin (U) expands. Wait until the polyurethane resin (U) reaches the set thickness.

이하, 제8단계(S18)를 설명한다.Hereinafter, the eighth step (S18) will be described.

설정된 두께에 도달한 상기 폴리우레탄수지(U)를 열을 주어 경화시킨다. 복합재 직물(F)에 폴리우레탄수지(U)가 함침된 성형체(X)가 만들어낸다.The polyurethane resin (U) having reached the set thickness is cured by applying heat. A molded body (X) in which a polyurethane resin (U) is impregnated with a composite fabric (F) is created.

이하, 제9단계(S19)를 설명한다.Hereinafter, the ninth step (S19) will be described.

비닐백(B)을 찢어서 성형체(X)를 꺼낸다.Tear the plastic bag (B) and take out the molded body (X).

이하, 제10단계(S20)를 설명한다.Hereinafter, a tenth step (S20) will be described.

성형체(X)의 두께를 동일하게 만들기 위해 성형체(X)를 깎거나, 성형체(X)를 연마하거나, 성형체(X)에 페인트를 칠하는 등 다양한 방법으로 후가공한다.In order to make the thickness of the molded body X the same, post-processing is performed by various methods such as cutting the molded body X, grinding the molded body X, or painting the molded body X with paint.

상술한 제1단계(S11) 내지 제10단계(S20)를 거쳐, 제1실시예에 따른 폴리우레탄 철도침목이 만들어진다.Through the first step (S11) to the tenth step (S20) described above, the polyurethane railroad sleeper according to the first embodiment is made.

이하, 본 발명의 제2실시예에 따른 철도침목 제조방법을 자세히 설명한다. 도 4를 기본적으로 참조한다. 설명의 편의상, 도 4에서 비닐백 내부에 적층된 복합재 직물과 메쉬가 잘 보이도록, 비닐백 전면을 절개한 상태로 표시하였다. 또한, 도 4가 복잡해지는 것을 피하기 위해, 에어실린더를 지지하는 프레임, 에어실린더로 공기를 공급하는 에어펌프, 에어펌프와 에어실린더를 연결하는 튜브 등의 도시를 생략하였다. Hereinafter, a method of manufacturing a railroad sleeper according to a second embodiment of the present invention will be described in detail. Reference is made to Fig. 4 by default. For convenience of explanation, in FIG. 4, the front of the plastic bag is shown in an incision so that the composite fabric and mesh laminated inside the plastic bag can be clearly seen. In addition, in order to avoid the complexity of FIG. 4, illustrations of a frame supporting the air cylinder, an air pump supplying air to the air cylinder, and a tube connecting the air pump and the air cylinder are omitted.

도 3에 도시된 바와 같이, 본 발명의 제2실시예에 따른 철도침목 제조방법은,As shown in Figure 3, the method for manufacturing a railroad sleeper according to the second embodiment of the present invention,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계(S21);A first step (S21) of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계(S22);A second step (S22) of laminating the composite fabric on the base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계(S23);A third step (S23) of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계(S24);A fourth step (S24) of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계(S25);A fifth step (S25) of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계(S26);A sixth step (S26) of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage, so that the polyurethane resin is impregnated into the composite fabric and flows into the discharge passage;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면 전체를 가압하여 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계(S27);When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step (S27) of pressing the entire polyurethane resin to have a uniform thickness;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계(S28);An eighth step (S28) of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계(S29);A ninth step (S29) of tearing the plastic bag to take out the molded body;

상기 성형체를 후가공하는 제10단계(S30)로 구성된다.It consists of a tenth step (S30) of post-processing the molded body.

본 발명의 제1실시예에서는 폴리우레탄수지의 부풀어 오르는 높이를 조절할 수 없지만, 본 발명의 제2실시예서는 폴리우레탄수지의 부풀어 오르는 높이를 조절하여, 폴리우레탄수지의 팽창 두께를 전체적으로 균일하게 맞출 수 있다.In the first embodiment of the present invention, the swelling height of the polyurethane resin cannot be adjusted, but in the second embodiment of the present invention, the swelling height of the polyurethane resin is adjusted so that the swelling thickness of the polyurethane resin is uniformly adjusted as a whole. I can.

이로 인해, 본 발명의 제2실시예는 본 발명의 제1실시예와 제7단계에서 차이가 있다. 이하, 제7단계만 설명한다.For this reason, the second embodiment of the present invention is different from the first embodiment of the present invention in the seventh step. Hereinafter, only the seventh step will be described.

이하, 제7단계(S27)를 설명한다.Hereinafter, the seventh step (S27) will be described.

폴리우레탄수지(U)가 설정된 양 만큼 주입되면, 폴리우레탄수지(U)의 주입을 멈추고, 폴리우레탄수지(U)가 팽창하면서 설정된 두께에 도달할 때까지 기다린다.When the polyurethane resin (U) is injected as much as the set amount, the injection of the polyurethane resin (U) is stopped, and the polyurethane resin (U) expands and waits until it reaches the set thickness.

여기서, 폴리우레탄수지(U)가 팽창하는 동안, 비닐백(B) 상면 전체를 가압판(T)으로 가압하여, 폴리우레탄수지(U)의 팽창 두께를 전체적으로 균일하게 만든다.Here, while the polyurethane resin (U) expands, the entire upper surface of the plastic bag (B) is pressed with the pressure plate (T), thereby making the overall expansion thickness of the polyurethane resin (U) uniform.

가압판(T)의 하면에는 압력센서(S)들이 설치되어 있으며, 가압판(T)의 중앙에는 가압판(T)을 상하강시키는 에어실린더(C)의 로드(R)가 연결된다.Pressure sensors (S) are installed on the lower surface of the pressure plate (T), and a rod (R) of the air cylinder (C) that moves the pressure plate (T) up and down is connected to the center of the pressure plate (T).

에어실린더(C)에는 공기압을 조절하는 밸브(V)가 설치된다.The air cylinder (C) is equipped with a valve (V) that controls the air pressure.

제어부(미도시)는 폴리우레탄수지(U)의 팽창력을 압력센서(S)로 감지하여, 밸브(V)로 에어실린더(C)에 유입되는 공기(A)의 유량을 조절하여 가압력을 적절하게 조절한다.The control unit (not shown) detects the expansion force of the polyurethane resin (U) with the pressure sensor (S), and adjusts the flow rate of the air (A) flowing into the air cylinder (C) with the valve (V) to properly adjust the pressing force. Adjust.

폴리우레탄수지(U)의 팽창 두께가 전체적으로 균일해지면, 철도침목의 두께를 균일하게 만들기 위해 성형체(X)를 깎는 과정을 생략할 수 있다.When the expanded thickness of the polyurethane resin (U) becomes uniform as a whole, the process of cutting the molded body (X) can be omitted to make the thickness of the railroad sleeper uniform.

상술한 제1단계(S21) 내지 제10단계(S30)를 거쳐, 제2실시예에 따른 폴리우레탄 철도침목이 만들어진다.Through the first step (S21) to the tenth step (S30) described above, a polyurethane railroad sleeper according to the second embodiment is made.

이하, 본 발명의 제3실시예에 따른 철도침목 제조방법을 자세히 설명한다. 도 6을 기본적으로 참조한다. 설명의 편의상, 도 6에서 비닐백 내부에 적층된 복합재 직물과 메쉬가 잘 보이도록, 비닐백 전면을 절개한 상태로 표시하였다. 또한, 도 6이 복잡해지는 것을 피하기 위해, 에어실린더를 지지하는 프레임, 에어실린더로 공기를 공급하는 에어펌프, 에어펌프와 에어실린더를 연결하는 튜브 등의 도시를 생략하였다. Hereinafter, a method of manufacturing a railroad sleeper according to a third embodiment of the present invention will be described in detail. Reference is made to FIG. 6 by default. For convenience of explanation, in FIG. 6, the front of the plastic bag is shown in a cut state so that the composite fabric and mesh laminated inside the plastic bag can be clearly seen. In addition, in order to avoid the complexity of FIG. 6, the frame supporting the air cylinder, the air pump supplying air to the air cylinder, and the tube connecting the air pump and the air cylinder are omitted.

도 5에 도시된 바와 같이, 본 발명의 제3실시예에 따른 철도침목 제조방법은,As shown in Figure 5, the method for manufacturing a railroad sleeper according to the third embodiment of the present invention,

복합재 직물과 폴리우레탄수지를 준비하는 제1단계(S31);A first step (S31) of preparing a composite fabric and a polyurethane resin;

상기 복합재 직물을 베이스판 위에 적층하는 제2단계(S32);A second step (S32) of laminating the composite fabric on the base plate;

상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계(S33);A third step (S33) of laminating a mesh on top of the laminated composite fabric;

상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계(S34);A fourth step (S34) of covering and sealing the laminated composite fabric and mesh with a plastic bag;

상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계(S35);A fifth step (S35) of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;

상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계(S36);A sixth step (S36) of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage, so that the polyurethane resin is impregnated into the composite fabric and flows into the discharge passage;

상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면을, 상기 폴리우레탄수지의 팽창력에 따라 분할 가압하여, 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계(S37);When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step (S37) of dividing and pressing the polyurethane resin according to the expansion force of the polyurethane resin to make the entire polyurethane resin a uniform thickness;

설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계(S38);An eighth step (S38) of curing the polyurethane resin having reached a set thickness by applying heat to create a molded body in which the polyurethane resin is impregnated in the composite fabric;

상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계(S39);A ninth step (S39) of tearing the plastic bag to take out the molded body;

상기 성형체를 후가공하는 제10단계(S40)로 구성된다.It consists of a tenth step (S40) of post-processing the molded body.

본 발명의 제1실시예에서는 폴리우레탄수지의 부풀어 오르는 높이를 조절할 수 없지만, 본 발명의 제3실시예서는 폴리우레탄수지의 부풀어 오르는 높이를 폴리우레탄수지의 팽창력에 따라 구역별로 조절하여, 폴리우레탄수지의 팽창 두께를 전체적으로 균일하게 맞출 수 있다.In the first embodiment of the present invention, the swelling height of the polyurethane resin cannot be adjusted, but in the third embodiment of the present invention, the swelling height of the polyurethane resin is adjusted for each zone according to the expansion force of the polyurethane resin. The expansion thickness of the resin can be uniformly adjusted throughout.

이로 인해, 본 발명의 제3실시예는 본 발명의 제1실시예와 제7단계에서 차이가 있다. 이하, 제7단계만 설명한다.For this reason, the third embodiment of the present invention is different from the first embodiment of the present invention in the seventh step. Hereinafter, only the seventh step will be described.

이하, 제7단계(S37)를 설명한다.Hereinafter, the seventh step (S37) will be described.

폴리우레탄수지(U)가 설정된 양 만큼 주입되면, 폴리우레탄수지(U)의 주입을 멈추고, 폴리우레탄수지(U)가 팽창하면서 설정된 두께에 도달할 때까지 기다린다.When the polyurethane resin (U) is injected as much as the set amount, the injection of the polyurethane resin (U) is stopped, and the polyurethane resin (U) expands and waits until it reaches the set thickness.

여기서, 폴리우레탄수지(U)가 팽창하는 동안, 비닐백(B) 상면을, 폴리우레탄수지(U)의 팽창력에 따라 분할 가압하여, 폴리우레탄수지의 두께를 전체적으로 균일하게 만든다.Here, while the polyurethane resin (U) expands, the upper surface of the plastic bag (B) is dividedly pressed according to the expansion force of the polyurethane resin (U) to make the thickness of the polyurethane resin uniform as a whole.

이를 위해, 비닐백(B) 상면 구역별로 가압판(T1,T2,T3)이 설치된다.To this end, pressure plates T1, T2, and T3 are installed for each upper area of the plastic bag B.

가압판(T1,T2,T3)의 하면 각각에는 압력센서(S1,S2,S3)들이 설치되어 있으며, 가압판(T1,T2,T3)의 중앙에는 가압판(T1,T2,T3)을 각각 상하강시키는 에어실린더(C1,C2,C3)의 로드(R1,R2,R3)가 연결된다. 에어실린더(C1,C2,C3) 각각에는 공기압을 조절하는 밸브(V1,V2,V3)가 설치된다.Pressure sensors (S1, S2, S3) are installed on each of the lower surfaces of the pressure plates (T1, T2, T3), and the pressure plates (T1, T2, T3) are moved up and down at the center of the pressure plates (T1, T2, T3). The rods R1, R2, R3 of the air cylinders C1, C2, C3 are connected. Each of the air cylinders C1, C2, and C3 is provided with valves V1, V2, and V3 that control air pressure.

폴리우레탄수지(U)의 팽창력을 압력센서(S1,S2,S3)로 감지하여, 밸브(V1,V2,V3)로 에어실린더(C1,C2,C3)에 유입되는 공기(A)의 유량을 조절하여 폴리우레탄수지(U)를 구역별 팽창력에 맞게 가압력을 다르게 가할 수 있다.The expansion force of the polyurethane resin (U) is sensed by the pressure sensors (S1, S2, S3), and the flow rate of air (A) flowing into the air cylinders (C1, C2, C3) through the valves (V1, V2, V3) is By adjusting, the polyurethane resin (U) can be applied differently to suit the expansion force of each area.

물론, 비닐백(B) 상면을 더 많은 구역으로 나누고 더 많은 가압판을 설치하여 구역별 폴리우레탄수지(U)의 팽창력에 맞게 가압력을 더 정밀하게 조절할 수 있다. Of course, by dividing the upper surface of the plastic bag (B) into more areas and installing more pressurizing plates, the pressing force can be more precisely adjusted to suit the expansion force of the polyurethane resin (U) for each area.

이렇게 폴리우레탄수지(U)의 팽창력이 부분마다 다를 경우까지 고려하여, 비닐백(B) 상면 구역별 팽창력에 맞게 가압력을 조절하여, 제2실시예 보다 정밀하게 폴리우레탄수지(U)의 팽창 두께를 균일하게 맞출 수 있다.In this way, considering the case that the expansion force of the polyurethane resin (U) is different for each part, the pressing force is adjusted according to the expansion force of each area on the top of the plastic bag (B), and the expansion thickness of the polyurethane resin (U) is more precise than in the second embodiment. Can be matched evenly.

폴리우레탄수지(U)의 팽창 두께가 전체적으로 균일해지면, 철도침목의 두께를 균일하게 만들기 위해 성형체(X)를 깎는 과정을 생략할 수 있다.When the expanded thickness of the polyurethane resin (U) becomes uniform as a whole, the process of cutting the molded body (X) can be omitted to make the thickness of the railroad sleeper uniform.

상술한 제1단계(S31) 내지 제10단계(S40)를 거쳐, 제3실시예에 따른 폴리우레탄 철도침목이 만들어진다.Through the first step (S31) to the tenth step (S40) described above, a polyurethane railroad sleeper according to the third embodiment is made.

F: 복합재 직물 U: 폴리우레탄수지
P: 베이스판 T,T1,T2,T3: 가압판
S,S1,S2,S3: 센서 C,C1,C2,C3: 에어실린더
R,R1,R2,R3: 로드 M: 메쉬
V,V1,V2,V3: 밸브
F: Composite fabric U: Polyurethane resin
P: base plate T,T1,T2,T3: pressure plate
S,S1,S2,S3: Sensor C,C1,C2,C3: Air cylinder
R,R1,R2,R3: rod M: mesh
V,V1,V2,V3: valve

Claims (3)

복합재 직물과 폴리우레탄수지를 준비하는 제1단계;
상기 복합재 직물을 베이스판 위에 적층하는 제2단계;
상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;
상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;
상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;
상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;
상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리는 제7단계;
설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;
상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및
상기 성형체를 후가공하는 제10단계를 포함하는 것을 특징으로 하는 철도침목 제조방법.
A first step of preparing a composite fabric and a polyurethane resin;
A second step of laminating the composite fabric on a base plate;
A third step of laminating a mesh on top of the laminated composite fabric;
A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;
A fifth step of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;
A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;
A seventh step of stopping the injection of the polyurethane resin when the polyurethane resin is injected in a predetermined amount, and waiting until the polyurethane resin expands and reaches a predetermined thickness;
An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded article in which the polyurethane resin is impregnated in the composite fabric;
A ninth step of tearing the plastic bag to take out the molded body; And
And a tenth step of post-processing the molded body.
복합재 직물과 폴리우레탄수지를 준비하는 제1단계;
상기 복합재 직물을 베이스판 위에 적층하는 제2단계;
상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;
상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;
상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;
상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;
상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면 전체를 가압하여 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계;
설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;
상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및
상기 성형체를 후가공하는 제10단계를 포함하는 철도침목 제조방법.
A first step of preparing a composite fabric and a polyurethane resin;
A second step of laminating the composite fabric on a base plate;
A third step of laminating a mesh on top of the laminated composite fabric;
A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;
A fifth step of installing an injection passage in the plastic bag and installing a discharge passage in the base plate;
A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;
When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step of pressing the entire polyurethane resin into a uniform thickness;
An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded article in which the polyurethane resin is impregnated in the composite fabric;
A ninth step of tearing the plastic bag to take out the molded body; And
A method for manufacturing a railroad sleeper comprising a tenth step of post-processing the formed body.
복합재 직물과 폴리우레탄수지를 준비하는 제1단계;
상기 복합재 직물을 베이스판 위에 적층하는 제2단계;
상기 적층된 복합재 직물의 맨 위에 메쉬를 적층하는 제3단계;
상기 적층된 복합재 직물과 메쉬를 비닐백으로 덮어 밀봉하는 제4단계;
상기 비닐백에 주입통로를 설치하고, 상기 베이스판에 배출통로를 설치하는 제5단계;
상기 배출통로에 진공을 작용시키고, 상기 주입통로를 통해 상기 폴리우레탄수지를 주입시켜, 상기 폴리우레탄수지가 상기 복합재 직물에 함침되면서, 상기 배출통로로 흘러가게 만드는 제6단계;
상기 폴리우레탄수지가 설정된 양 만큼 주입되면, 상기 폴리우레탄수지의 주입을 멈추고, 상기 폴리우레탄수지가 팽창하면서 설정된 두께에 도달할 때까지 기다리되, 상기 폴리우레탄수지가 팽창하는 동안, 상기 비닐백 상면을, 상기 폴리우레탄수지의 팽창력에 따라 분할 가압하여, 상기 폴리우레탄수지 전체를 균일한 두께로 만드는 제7단계;
설정된 두께에 도달한 상기 폴리우레탄수지를 열을 주어 경화시켜, 상기 복합재 직물에 상기 폴리우레탄수지가 함침된 성형체를 만들어내는 제8단계;
상기 비닐백을 찢어서 상기 성형체를 꺼내는 제9단계; 및
상기 성형체를 후가공하는 제10단계를 포함하는 철도침목 제조방법.
A first step of preparing a composite fabric and a polyurethane resin;
A second step of laminating the composite fabric on a base plate;
A third step of laminating a mesh on top of the laminated composite fabric;
A fourth step of covering and sealing the laminated composite fabric and mesh with a plastic bag;
A fifth step of installing an injection passage in the plastic bag and a discharge passage in the base plate;
A sixth step of applying a vacuum to the discharge passage and injecting the polyurethane resin through the injection passage so that the polyurethane resin flows through the discharge passage while being impregnated with the composite fabric;
When the polyurethane resin is injected as much as a set amount, the injection of the polyurethane resin is stopped, and the polyurethane resin expands and waits until it reaches the set thickness, while the polyurethane resin expands, the top surface of the plastic bag A seventh step of dividing and pressing the polyurethane resin according to the expansion force of the polyurethane resin to make the entire polyurethane resin a uniform thickness;
An eighth step of curing the polyurethane resin having reached a set thickness by applying heat to create a molded article in which the polyurethane resin is impregnated in the composite fabric;
A ninth step of tearing the plastic bag to take out the molded body; And
A method for manufacturing a railroad sleeper comprising a tenth step of post-processing the molded body.
KR1020190072943A 2019-06-19 2019-06-19 Method for manufacturing railway sleepers KR102236667B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080011128A (en) * 2006-07-27 2008-01-31 스미하쯔 가부시키가이샤 Synthetic railway sleeper
KR101424683B1 (en) 2013-04-24 2014-08-01 케이피엑스케미칼 주식회사 Composition for synthetic resin sleeper and preparation method thereof
KR20170112396A (en) * 2016-03-31 2017-10-12 동아대학교 산학협력단 Three Dimensional Fiber-Reinforced Plastics and Manufacturing Method thereof
KR20180104215A (en) * 2017-03-09 2018-09-20 재단법인 한국탄소융합기술원 Composite base plate for rolltainer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080011128A (en) * 2006-07-27 2008-01-31 스미하쯔 가부시키가이샤 Synthetic railway sleeper
KR101424683B1 (en) 2013-04-24 2014-08-01 케이피엑스케미칼 주식회사 Composition for synthetic resin sleeper and preparation method thereof
KR20170112396A (en) * 2016-03-31 2017-10-12 동아대학교 산학협력단 Three Dimensional Fiber-Reinforced Plastics and Manufacturing Method thereof
KR20180104215A (en) * 2017-03-09 2018-09-20 재단법인 한국탄소융합기술원 Composite base plate for rolltainer

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