KR100263316B1 - Device for manufacturing optical cable - Google Patents

Device for manufacturing optical cable Download PDF

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Publication number
KR100263316B1
KR100263316B1 KR1019980028776A KR19980028776A KR100263316B1 KR 100263316 B1 KR100263316 B1 KR 100263316B1 KR 1019980028776 A KR1019980028776 A KR 1019980028776A KR 19980028776 A KR19980028776 A KR 19980028776A KR 100263316 B1 KR100263316 B1 KR 100263316B1
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South Korea
Prior art keywords
optical cable
sintering furnace
sintering
manufacturing apparatus
length
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KR1019980028776A
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Korean (ko)
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KR20000008798A (en
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서태일
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황경희
대세로공업주식회사
서태일
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/0128—Manufacture of preforms for drawing fibres or filaments starting from pulverulent glass
    • C03B37/01282—Manufacture of preforms for drawing fibres or filaments starting from pulverulent glass by pressing or sintering, e.g. hot-pressing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/0128—Manufacture of preforms for drawing fibres or filaments starting from pulverulent glass
    • C03B37/01285—Manufacture of preforms for drawing fibres or filaments starting from pulverulent glass by centrifuging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

(1) 청구범위에 기재된 발명이 속한 기술분야.(1) The technical field to which the invention described in the claims belongs.

광케이블 제조장치의 소결로 회전 및 승강장치에 관한 분야.Sintering furnace rotation and elevating device of the optical cable manufacturing apparatus.

(2) 발명이 해결하려고 하는 기술적 과제(2) The technical problem to be solved by the invention

종래의 광케이블 제조장치는 고정식 소결로 구성되어 있고 또 소결로의 길이가 상당히 길어, 온도편차가 심하게 발생할 수 밖에 없어 불량발생률이 높고, 또 소결로의 길이보다 긴 케이블은 생산할 수 없어 생산에 한계가 따랐으며 더불어 생산원가가 고가로 드는 폐단이 따랐던 것이다.The conventional optical cable manufacturing apparatus is composed of a fixed sintering furnace, and the length of the sintering furnace is considerably long, so that the temperature deviation can be severe, so that the defect rate is high, and the cable longer than the length of the sintering furnace can not be produced, which limits the production In addition, the high cost of production was followed.

(3)발명의 해결방법의 요지(3) Summary of solution of invention

본 발명은 소결로가 자체 회정함과 동시에 서서히 회전하면서 세라믹을 소결하여 유리화시킴으로써 광케이블 제조시 온도편차를 크게 줄이고, 더불어 불량발생률 최소화와 생산성향상, 그리고 원가절감효과를 극대화시킬 수 있도록 하려는데 발명의 요지가 있는 것임.The present invention is intended to significantly reduce the temperature deviation during optical cable manufacturing, and to minimize the occurrence of defects, improve productivity, and maximize the cost-saving effect by sintering the ceramic and self-rotating and sintering the ceramic while slowly rotating. There is.

(4)발명의 중요한 용도(4) Significant uses of the invention

광케이블을 제조할 때 사용되는 것임.It is used when manufacturing optical cable.

Description

광케이블 제조장치의 소결로 회전 및 승강장치.Sintering furnace rotating and elevating device of optical cable manufacturing equipment.

본 발명은 광케이블 제조장치의 소결로 회전 및 승강장치에 관한 것으로, 구체적으로는 소결로의 길이를 종래보다 매우 짧게 형성하되, 소결로가 자체회전 및 승강이 가능하게 함으로써, 광케이블 제조시 온도편차를 극소화시키고, 이에 따라 생산성 및 품질향상과 불량극조화 그리고 원가절감효과를 극대화시킬 수 있도록 하기 위한 것이다.The present invention relates to a sintering furnace rotation and elevating device of the optical cable manufacturing apparatus, specifically, the length of the sintering furnace is formed to be very short than the conventional, the sintering furnace is capable of self-rotating and elevating, thereby minimizing the temperature deviation during optical cable manufacturing In order to maximize the productivity and quality, cope with defects and reduce the cost.

또한 소결로가 회전 및 승강하면서 고온(약 1500℃ 정도)에서 세라믹을 광 케이블로 소결(이때 첨가원소로는 산소를 사용함)함에 따라 소결로의 승강거리만 크게 하여주면 얼마든지 길이가 긴 광케이블을 제조할 수 있게 된다.In addition, as the sintering furnace rotates and elevates, the ceramic is sintered into the optical cable at a high temperature (about 1500 ° C). It becomes possible to manufacture.

통상 광케이블을 제조하는 소결로는 중공관체와 같이 중앙부가 비어 있는 구조로 형성되어 있고, 소결로 중앙부에는 광케이블로 제조되는 세락믹을 메달아 세울 수 있는 투명한 석영관이 설치되어 있으며, 상기 석영관과 소결로는 각각 고정되어 있다.Usually, a sintering furnace for manufacturing an optical cable is formed in a hollow structure such as a hollow tube body, and a transparent quartz tube that can stand up the ceracic made of the optical cable is installed at the center of the sintering furnace. The sintering furnaces are fixed respectively.

또한 광케이블의 길이를 감안하여 상기 석영관과 소결로는 상당히 길며, 소결도중 변형을 가급적 최소화시키기 위하여 수직으로 세워진 구조로 되어 있으며, 더불어 소결로 내에 설치된 히터가 작용할 때 고른 온도로 작용하여야만 제대로 광케이블을 제조할 수 있게 된다.In addition, the quartz tube and the sintering furnace are considerably long in view of the length of the optical cable, and have a vertical structure in order to minimize deformation during sintering. In addition, when the heater installed in the sintering furnace works, the temperature of the optical cable must be properly applied. It becomes possible to manufacture.

그러나 상기한 종래 광케이블 제조장치는 다음과 같은 큰 문제점이 따를 수 밖에 없었다.However, the above-described conventional optical cable manufacturing apparatus had to follow the following big problem.

즉 소결로의 길이가 상당히 긴데다가 고정된 구조이기에 히터를 작동시켜 약 1500℃로 온도를 높임과 동시에 광케이블 소재인 세라믹봉에 가열시키는 과정에서 온도편차가 필연적으로 발생할 수 없게 된다는 것이다.That is, since the length of the sintering furnace is quite long and fixed, the heater is operated to raise the temperature to about 1500 ° C. and at the same time, the temperature deviation cannot necessarily occur in the process of heating the ceramic rod, which is an optical cable material.

다시 말하면, 소결로에 히터를 조밀한 간격으로 설치한다하더라도 광케이블소재인 세라믹봉에 작용하는 온도가 부위에 따라 미세한 온도차이만 나더라도 성질 변형이 초래되거나 휘거나 또는 소결시 유리화가 되지 않을 부분이 발생되기 쉬운 불량발생이 필연적일 수밖에 없고, 또 상품성이 크게 떨어지는 폐단으로 될 수밖에 없게 된다는 것이다.In other words, even if heaters are installed in the sintering furnace at close intervals, even if the temperature acting on the ceramic rod, which is an optical cable material, varies slightly depending on the part, there will be a part that does not cause deformation or bend or vitrification during sintering. It is inevitable that defects that are likely to occur are inevitably necessary, and that they will be the end of the product which is inferior in merchandise.

또한 전기한 소결로는 상당히 길이가 길면서도 온도에 따른 정밀도와 적절한 수명을 유지하여야 하기 때문에 제작비용이 매우 고가로 들 수밖에 없고, 소결로의 길이가 곧 광케이블의 길이로 한정될 수밖에 없어, 광케이블 생산시 생산량 및 품질이 저조하고 원가상승이 필연적으로 야기되는 폐단이 따랐던 것이며, 이와 같은 폐단이 따를 수밖에 없는 주원인은 소결로 자체가 고정화되어 있기 때문에 야기되는 현상인 것이다..In addition, the electric sintering furnace is quite long, but the manufacturing cost is very expensive because the precision and life expectancy according to the temperature must be maintained, and the length of the sintering furnace is limited to the length of the optical cable. In the case of poor production and quality at the time of production, cost increases were inevitably caused, and the main reason for these wastes was due to the fixed sintering furnace itself.

따라서 본 발명은 전술한 종래 고정식 소결로에 대한 제반문제점을 해결하고자 발명한 것으로, 특히 소결로의 길이를 짧게 하되, 하부에 카본브러쉬와 스퍼어기어를 설치하여 모타와 피니언으로 치합구동시킴으로써 소결로가 회전하는 상태에서도 전원공급이 안정적으로 이루어지게 하고 또, 이들을 볼스크류와 L.M가이드로서 안정적으로 숭강시킬 수 있도록 함으로서, 광케이블 소재인 세라믹을 소결할 때 온도편차를 최소화 할 수 있게 되며, 더불어 길이가 긴 광케이블소재를 밑에서부터 소결하여 유리화시키면서 상승함으로써 소결로의 상승거리만 크게 하여주면, 얼마든지 길이가 긴 광케이블을 생산할 수 있게 되어 고품질화와 생산성향상 그리고 불량 감소 및 원가절감효과를 극대화시킬 수 있게 되는 것이다.Therefore, the present invention has been invented to solve the above-mentioned problems with the conventional stationary sintering furnace, and in particular, the length of the sintering furnace is shortened, but the carbon brush and the spur gear are installed at the lower portion to sinter the furnace by driving the motor and pinion. Power supply is stable even in the state of rotation, and it is possible to stably reinforce them as ball screw and LM guide, thereby minimizing the temperature deviation when sintering ceramics, which are optical cable materials, By sintering the long optical cable material from the bottom and vibrating, increasing the distance of the sintering furnace to increase the length of the sintering furnace, it is possible to produce a long length of optical cable, thereby maximizing the quality, productivity improvement, defect reduction and cost reduction effect. will be.

제1도는 본 발명의 전체예시도.1 is an overall view of the present invention.

제2도는 본 발명의 요부확대 단면도.2 is an enlarged cross-sectional view of the main portion of the present invention.

제3도는 제2도의 a-a' 선 단면도.3 is a cross-sectional view taken along the line a-a 'in FIG.

제4도는 제2도의 b-b'선 단면도.4 is a cross-sectional view taken along the line b-b 'of FIG.

제5도는 본 발명의 소결로에 대한 확대평면도5 is an enlarged plan view of the sintering furnace of the present invention

제6도는 본 발명의 소결로에 대한 확대종단면도6 is an enlarged longitudinal sectional view of the sintering furnace of the present invention

제7도는 본 발명의 요부확대 단면도로서 광케이블 소재를 삽입시키는 석영관을 나타낸 것임.7 is an enlarged cross-sectional view of the main portion of the present invention showing a quartz tube into which an optical cable material is inserted.

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

1 : 광케이블 설치 및 인출장치 2 : 하부프레임1: Optical cable installation and withdrawal device 2: Lower frame

3 : 석영관 4 : 소결로3: quartz tube 4: sintering furnace

5 : 승강판 41 : 히터5: lifting plate 41: heater

42 : 원통형 발열체 43 : 카본브러쉬42: cylindrical heating element 43: carbon brush

43' : 전원공급단자 45 : 스퍼어기어43 ': Power supply terminal 45: Spur gear

46 : 볼베어링 47 : 베이스46: ball bearing 47: base

51, 51' : L.M 가이드 52 : 볼스크류우51, 51 ': L.M guide 52: Ball screw

53, 55 : 모타 54 : 피니언53, 55: Motor 54: Pinion

상부프레임에 광케이블 설치 및 인출장치(1)를 설치하고,Install the optical cable installation and take-out device (1) on the upper frame,

하부프레임(2)에는 내부에 광케이블 소재를 삽입시킬 수 있는 투명 석영관(3)과 상기 석영관(3) 외주면을 감싸도록 소결로(4)를 설치하여 광케이블소재를 유리화(광케이블)시킬 수 있도록 된 통상의 광케이블 제조장치에 있어서,The lower frame 2 is provided with a transparent quartz tube 3 into which an optical cable material can be inserted and a sintering furnace 4 to surround the quartz tube 3 outer circumferential surface to vitrify the optical cable material. In the conventional optical cable manufacturing apparatus,

상기 소결로(4)는 길이가 짧게 하되, 내부에는 통상의 구조와 같이 히터(41) 및 Sic로된 원통형 발열체(42)를 일정한 간격을 유지시켜 다단설치하고, 하부에는 상기 히터(41)와 연결되는 카본브러쉬(43)를 전원공급단자(43')와 접촉 마찰되도록 다단설치한 전원 전달관체(44)를 설치하며, 상기 전원전달관체(44) 하부에 스퍼어기어(45)를 설치하여 볼베어링(46)으로서 승강판(5) 상면에 고정 설치된 베이스(47)위에 관착되게 하고,The length of the sintering furnace 4 is short, but inside the heater 41 and the cylindrical heating element 42 made of Sic, such as a conventional structure, the multi-stage is installed at regular intervals, the lower portion of the heater 41 and Install the power transmission pipe 44 installed in multiple stages so that the carbon brush 43 to be contacted friction with the power supply terminal 43 ', by installing a spur gear 45 in the lower portion of the power transmission pipe 44 As a ball bearing 46 to be adhered to the base 47 fixed to the upper surface of the elevating plate 5,

상기 소결로 일측에 L.M 가이드(51)(51')와 볼스크류우(52)에 의해 승강하는 승강판(5)을 설치하되, 상기 승강판(5)에는 모타(53)와 피니언(54), 그리고 상기 피니언(54)과 치합되어 소결로(4)를 회전시키는 종동피니언(54') 및 상기 소결로(4)가 안착되어 안정적으로 회전할 수 있도록 도와주는 베이스(47)를 설치하였으며,On one side of the sintering furnace, an elevating plate 5 which is elevated by an LM guide 51, 51 ′ and a ball screw 52 is installed, and the elevating plate 5 has a motor 53 and a pinion 54. In addition, a driven pinion 54 ', which is engaged with the pinion 54 and rotates the sintering furnace 4, and a base 47 that helps to stably rotate by mounting the sintering furnace 4 are installed.

상기 볼스크류우(52)는 모타(55)의 동력으로 정 또는 역회전이 이루어지도록 하되, 소결로(4)를 안착한 승강판(5)이 분당 1mm내외의 미세한 상승을 할 수 있도록 한다.The ball screw 52 is to be the forward or reverse rotation by the power of the motor 55, the lifting plate 5 seated on the sintering furnace (4) to allow a fine rise of about 1mm per minute.

미 설명부호 6은 사다리, 7은 소재홀더, 8은 홀더지지대, 9는 첨가원소 투입부, 10은 광케이블 소재이다.Reference numeral 6 is a ladder, 7 is a material holder, 8 is a holder support, 9 is an additional element input, and 10 is an optical cable material.

이와 같이 구성된 본 발명은 종래 석영관(3) 외주면을 전체적으로 감싸도록 구성된 소결로를 매우 짧게 형성(종래길이의 1/8~1/10정도로서, 소결로의 길이에 따라 다소차이가 있으나 통상 30mm~50mm정도면 됨)하여 약 300RPM정도로 자체회전하면서 미세한 높이로 상승시킴에 따라, 광케이블소재(10)를 온도편차없이 신속하게 유리화시킬 수 있게 되는 것이다.The present invention configured as described above forms a very short sintering furnace configured to surround the entire outer circumferential surface of the conventional quartz tube 3 (about 1/8 to 1/10 of the conventional length, although there is a slight difference depending on the length of the sintering furnace, but usually 30 mm ~ 50 mm) and as it rises to a fine height while rotating itself to about 300 RPM, the optical cable material 10 can be quickly vitrified without temperature deviation.

또한 소결로(4)가 자체회전하면서 미세하게 상승함에 따라 온도편차가 거의 제로에 가깝게 되어 불량발생률이 최소화되고, 광케이블 소재의 변형이 거의 없게 되어 고품질화와 생산성향상에 기여할 수 있게 된다.In addition, as the sintering furnace 4 self-rotates finely, the temperature deviation becomes nearly zero, thereby minimizing the defect rate and hardly deforming the optical cable material, thereby contributing to the improvement of quality and productivity.

이하 본 발명의 작용을 구체적으로 설명한다.Hereinafter, the operation of the present invention will be described in detail.

위에서도 잠깐 언급하였듯이 본 발명의 소결로(4)는 종래의 소결로에 비하여 매우 짧게 형성하였지만, 자체회전과 승강작용에 의하여 광케이블 소재(10)를 소결시 온도편차를 극소화할 수 있게 하였으며, 또한 소결로(4)의 승강거리만 크게 하면 길이가 긴 광케이블소재(10)도 얼마든지 소결하여 광케이블을 생산할 수 있게 된다.As mentioned briefly above, the sintering furnace 4 of the present invention is formed much shorter than the conventional sintering furnace, but it is possible to minimize the temperature deviation when the optical cable material 10 is sintered by self-rotation and elevating action. If only the lifting distance of the furnace 4 is increased, the optical cable material 10 having a long length may be sintered to produce an optical cable.

즉, 본 발명에서의 소결로(4)는 하부에 카본브러쉬(43)를 다단설치하되,That is, in the present invention, the sintering furnace 4 is provided with a multi-stage carbon brush 43,

상기 카본브러쉬(43)외주면에 전원공급단자(43')를 접촉마찰시킴으로써, 소결로(4)가 약 300RPM정도로 회전하는 속에서도 안정적으로 히터(41)에 전원공급을 할 수 있게 되고 또, 상기한 소결로(4)는 볼스크류(52)와 LM가이드(51)(51')에 의해 미세하게 상승하게 되므로 온도편차가 발생될 염려가 전혀 없게 된다.By frictionally contacting the power supply terminal 43 'with the outer surface of the carbon brush 43, it is possible to stably supply power to the heater 41 even when the sintering furnace 4 rotates to about 300 RPM. Since the sintering furnace 4 is finely raised by the ball screw 52 and the LM guides 51 and 51 ′, there is no fear of temperature deviation.

또한 상기한 소결로(4)는 볼스크류우(52)와 L.M가이드에 의해 분당 1mm정도로 상승하기에 상승하는 과정에서 진동이나 떨림현상이 발생될 염려가 저혀 없게 되며 따라서 광케이블 소재를 안정적으로 유리화시켜 광케이블로 제조할 수 있게 되는 것이다.In addition, since the sintering furnace 4 is raised by about 1 mm per minute by the ball screw 52 and the LM guide, there is no fear of vibration or vibration occurring during the ascending process, thus stably vitrifying the optical cable material. Can be manufactured with optical cable.

이상 설명한 바와 같이 본 발명은 소결로의 길이를 짧게 하여 자체회전 및 승강이 가능하게 하였으므로, 광케이블 소재를 소결할 때 온도편차를 극소화할 수 있게 되고, 이에 따라 광케이블의 고품질화와 생산성향상, 그리고 원가절감효과를 극대화 할 수 있게 되는 매우 유용한 발명인 것이다.As described above, the present invention enables the self-rotating and elevating by shortening the length of the sintering furnace, thereby minimizing the temperature deviation when sintering the optical cable material, thereby improving the quality and productivity of the optical cable, and reducing the cost. It is a very useful invention that can be maximized.

Claims (1)

상부프레임에 광케이블 설치 및 인출장치(1)를 설치하고,Install the optical cable installation and take-out device (1) on the upper frame, 하부프레임(2)에는 내부에 광케이블소재를 삽입시킬 수 있는 투명석영관과 상기 석영관 외주면을 감싸도록 소결로를 설치하여 광케이블 소재를 유리화(광케이블로 형성하는 것을 말함)시킬 수 있도록 한 통상의 광케이블 제조장치에 있어서,In the lower frame 2, a transparent quartz tube capable of inserting an optical cable material therein and a sintering furnace are installed to surround the outer circumferential surface of the quartz tube so that the optical cable material can be vitrified (referred to be formed of an optical cable). In the manufacturing apparatus, 상기 소결로(4)는 길이가 짧게 하되, 내부에는 통상의 구조와 같이 히터(41) 및 Sic로 된 원통형 발열체(42)를 일정한 간격을 유지시켜 다단 설치하고, 하부에는 상기 히터(41)와 연결되는 카본브러쉬(43)를 전원공급단자(43')와 접촉마찰되도록 다단설치한 전원전달관체(44)를 설치하며, 상기 전원전달관체(44) 하부에 스피어기어(45)를 설치하여 볼베어링(46)으로써 승강판(5)상면에 고정설치된 베이스(47)위에 안착되게 하고, 상기 승강판(5)은 L.M가이드(51)(51') 및 모타(55)와 연결된 볼스크류우(52)에 의해 승강하게 하며, 승강판(5) 일측에 모타(53)와 피니언(54)을 설치하여, 상기 피니언(54)이 스퍼어기어(45)에 치합되게 함으로써 소결로(4)가 자체회전 및 승강하도록 구성함을 특징으로 하는 광케이블 제조장치의 소결로 회전 및 승강장치.The sintering furnace 4 has a short length, but inside the heater 41 and the cylindrical heating element 42 made of Sic are installed in multiple stages at regular intervals, and the heater 41 and the lower part are installed in the same manner as in a conventional structure. Install the power transmission pipe 44 installed in multiple stages so that the carbon brush 43 to be contacted with the power supply terminal 43 'is frictional, and a spear gear 45 is installed below the power transmission pipe 44 to provide a ball bearing. (46) to be seated on the base 47 fixed to the elevating plate (5) upper surface, the elevating plate (5) is a ball screw 52 connected to the LM guides 51 (51 ') and the motor (55) And the motor 53 and the pinion 54 are installed on one side of the elevating plate 5 so that the pinion 54 is engaged with the spur gear 45 so that the sintering furnace 4 itself. Sintering furnace rotation and lifting apparatus of the optical cable manufacturing apparatus, characterized in that configured to rotate and lift.
KR1019980028776A 1998-07-09 1998-07-09 Device for manufacturing optical cable KR100263316B1 (en)

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Publication number Priority date Publication date Assignee Title
KR100346112B1 (en) * 1999-12-22 2002-08-01 삼성전자 주식회사 Apparatus and method for sintering over-jacketting tube in zone sintering process of optical fiber preform fabrication process using sol-gel process

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KR100820565B1 (en) * 2006-11-01 2008-04-07 주식회사 두원공조 Air conditioner for vehicle and linear control method of the same

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Publication number Priority date Publication date Assignee Title
KR100346112B1 (en) * 1999-12-22 2002-08-01 삼성전자 주식회사 Apparatus and method for sintering over-jacketting tube in zone sintering process of optical fiber preform fabrication process using sol-gel process

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