KR20000002577A - Panel molding device for cathode ray tube - Google Patents

Panel molding device for cathode ray tube Download PDF

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Publication number
KR20000002577A
KR20000002577A KR1019980023403A KR19980023403A KR20000002577A KR 20000002577 A KR20000002577 A KR 20000002577A KR 1019980023403 A KR1019980023403 A KR 1019980023403A KR 19980023403 A KR19980023403 A KR 19980023403A KR 20000002577 A KR20000002577 A KR 20000002577A
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KR
South Korea
Prior art keywords
plunger
cooling water
panel
cathode ray
ray tube
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KR1019980023403A
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Korean (ko)
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KR100355551B1 (en
Inventor
이주원
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서두칠
한국전기초자 주식회사
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Priority to KR1019980023403A priority Critical patent/KR100355551B1/en
Publication of KR20000002577A publication Critical patent/KR20000002577A/en
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Publication of KR100355551B1 publication Critical patent/KR100355551B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/244—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for cathode ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/86—Vessels and containers
    • H01J2229/8613—Faceplates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks

Abstract

PURPOSE: A panel mold for a cathode ray tube is provided to improve the quality of a panel as well as to control the generation of the heat distortion of a plunger by properly keeping the temperature of the plunger when molding a panel. CONSTITUTION: A panel mold comprises: a lower mold(5); a plunger(11) with a cooling water receptive part; a cooling water supplying member to cool the plunger; a depressed corner formed by discharging process to the corners of the lower part of the cooing water receptive part; and many drilling holes formed by drilling in a certain depth.

Description

음극선관용 패널 성형장치.Panel forming apparatus for cathode ray tube.

본 발명은, 음극선관용 패널 성형장치에 관한 것으로서, 보다 상세하게는, 패널을 성형할 때, 플런저의 온도를 적절하게 관리하여 플런저에 열변형이 발생하는 것을 억제시킬 수 있을 뿐만 아니라 패널의 품질을 향상시킬 수 있도록 한 음극선관용 패널 성형장치에 관한 것이다.The present invention relates to a panel forming apparatus for a cathode ray tube, and more particularly, when forming a panel, it is possible to appropriately manage the temperature of the plunger to suppress the occurrence of thermal deformation in the plunger and to improve the quality of the panel. The present invention relates to a panel forming apparatus for a cathode ray tube that can be improved.

일반적으로 음극선관은 화상이 투사되는 전방에 위치한 패널과, 패널의 배후에 결합되는 깔때기 형상의 펀넬과, 전자총을 구비하여 펀넬에 결합되는 넥크를 가진다. 패널과 펀넬은 용융로에서 글라스의 원료를 가열한 다음, 용융된 글라스고브를 각각의 성형장치에 공급하여 이를 가압함으로써 성형된다.Generally, a cathode ray tube has a panel located in front of which an image is projected, a funnel-shaped funnel coupled to the rear of the panel, and a neck having an electron gun coupled to the funnel. The panels and funnels are formed by heating the raw material of the glass in the melting furnace and then supplying the molten glass gob to each forming apparatus and pressing it.

도 4는 종래의 음극선관용 패널 성형장치의 종단면도이다. 이 도면에 도시된 바와 같이, 음극선관용 패널 성형장치는 지지대(101)와, 지지대(101)에 고정되어 패널(103)의 외벽면을 성형시키는 하부몰드(105)와, 하부몰드(105)의 상측 단부에 배치되어 패널(103)의 접합단부면(107)을 성형시키는 사각루프형상의 쉘몰드(109)와, 하부몰드(105)를 향해 승강가능하여 하강시 하부몰드(105)와 소정 이격공간을 형성하며, 패널(103)의 내벽면을 성형시키는 플런저(111)를 갖는다.It is a longitudinal cross-sectional view of the conventional panel forming apparatus for cathode ray tubes. As shown in the figure, the cathode ray tube panel forming apparatus includes a support base 101, a lower mold 105 fixed to the support base 101 to form an outer wall surface of the panel 103, and a lower mold 105. The rectangular shell-shaped shell mold 109 disposed at the upper end to form the joint end surface 107 of the panel 103 and the lower mold 105 can be lifted and lowered to a predetermined distance from the lower mold 105 when descending. A plunger 111 is formed to form a space and to form an inner wall surface of the panel 103.

하부몰드(105)의 내벽면과 플런저(111)의 외벽면에는 패널(103)의 전방곡률을 성형하기 위한 전방성형면(113)과, 모서리부(115)의 성형을 위한 모서리성형면(117), 그리고 스커트부(119)의 성형을 위한 스커트성형면(121)이 각각 대응하여 형성되어 있다.On the inner wall surface of the lower mold 105 and the outer wall surface of the plunger 111, the front molding surface 113 for forming the front curvature of the panel 103, and the corner molding surface 117 for forming the corner portion 115 ) And a skirt forming surface 121 for forming the skirt portion 119 are respectively formed.

플런저(111)의 상측에는 플런저(111)와 일체로 승강운동하며, 냉각수공급유로(125)와 냉각수복귀유로(127)가 형성된 플런저헤드(129)가 설치되어 있으며, 플런저(111)의 내측 함몰부에는 플런저(111)에 냉각수를 분배 공급하는 냉각수분배부재(123)가 플런저(111)의 내벽면과 소정 이격되도록 플런저헤드(129)의 하단면에 스크류(149) 결합되어 있다.On the upper side of the plunger 111, the lifting and lowering movement integrally with the plunger 111, the plunger head 129 having a cooling water supply passage 125 and the cooling water return passage 127 is provided, the inner recess of the plunger 111 In the portion, a cooling water distribution member 123 for distributing and supplying cooling water to the plunger 111 is coupled to the bottom surface of the plunger head 129 so as to be spaced apart from the inner wall surface of the plunger 111 by a screw 149.

냉각수분배부재(123)의 내측에는 상단면으로부터 함몰된 냉각수수용공간(137)이 형성되어 있으며, 플런저헤드(129)의 하단면에 스크류(149) 결합될 수 있도록 복수의 보스부(150)가 저부면으로부터 돌출형성되어 있다. 냉각수분배부재(123)의 중앙영역에는 냉각수수용공간(137)으로부터 냉각수분배유로(139)로 유출되어 플런저(111)를 냉각시킨 냉각수가 배출되는 냉각수배출유로(141)가 플런저헤드(129)의 냉각수복귀유로(127)와 연통되도록 형성되어 있다. 또한, 냉각수분배부재(123)와 플런저(111)의 내벽면 사이에는 냉각수분배유로(139)로부터 공급된 냉각수가 유동할 수 있도록 냉각수유동유로(143)가 형성되어 있다.A cooling water receiving space 137 recessed from an upper end surface is formed inside the cooling water distribution member 123, and a plurality of bosses 150 may be coupled to the lower surface of the plunger head 129. It protrudes from a bottom surface. In the central region of the coolant distribution member 123, a coolant discharge flow passage 141 through which the coolant discharged from the coolant accommodation space 137 to the coolant distribution passage 139 and cooling the plunger 111 is discharged. The cooling water return passage 127 is formed to communicate with. In addition, a cooling water flow passage 143 is formed between the cooling water distribution member 123 and the inner wall surface of the plunger 111 so that the cooling water supplied from the cooling water distribution passage 139 can flow.

한편, 플런저(111)의 내벽면과 저부면이 만나는 영역에는 플런저(111)를 냉각하기 위해서 외측을 향해 소정 함몰되도록 방전가공하거나 소정 간격을 두고 외측을 향해 소정의 깊이로 하향 경사지게 냉각홀을 가공한다. 도 5는 도 4의 플런저의 확대종단면도로 플런저(111)의 내벽면과 저부면 사이의 변부영역과 모서리영역에 플런저(111)의 냉각을 원활하게 할 수 있도록 외측을 향해 가로로 소정 함몰된 모서리냉각부(147)가 방전가공되어 있는 것을 도시한 것이다.On the other hand, in the area where the inner wall surface and the bottom surface of the plunger 111 meets, discharge processing is performed to dent the plunger 111 to the outside to cool down, or the cooling hole is processed to be inclined downward at a predetermined depth toward the outside at a predetermined interval. do. FIG. 5 is an enlarged longitudinal sectional view of the plunger of FIG. 4, and a predetermined recessed edge horizontally toward the outside to smoothly cool the plunger 111 in the edge region and the corner region between the inner wall surface and the bottom surface of the plunger 111. The cooling unit 147 shows that the discharge is processed.

이상과 같은 구성에 의하여, 용융로(미도시)로부터 용융상태의 글라스고브가 하부몰드(105)에 공급되면 플런저(111)가 하부몰드(105)를 향해 하강하여 글라스고브를 가압하게 된다. 가압된 글라스고브는 플런저(111)와 하부몰드(105)사이에 형성된 이격공간을 따라 유동하여 패널(103)이 성형된다.By the above configuration, when the glass gob in the molten state is supplied from the melting furnace (not shown) to the lower mold 105, the plunger 111 is lowered toward the lower mold 105 to pressurize the glass gob. The pressurized glass gob flows along the separation space formed between the plunger 111 and the lower mold 105 to form the panel 103.

글라스고브를 가압할 때, 패널(103)의 품질을 위해 플런저(111)의 온도를 관리하기 위해서 공급되는 냉각수는 플런저헤드(129)의 냉각수공급유로(125)를 통해 냉각수분배부재(123)에 형성된 냉각수수용공간(137)으로 유입되며, 유입된 냉각수는 냉각수분배부재(123)에 형성된 복수의 냉각수분배유로(139)를 통해 플런저(111)의 내벽면으로 공급된다.When pressing the glass gob, the cooling water supplied to manage the temperature of the plunger 111 for the quality of the panel 103 is supplied to the cooling water distribution member 123 through the cooling water supply passage 125 of the plunger head 129. It is introduced into the formed coolant receiving space 137, the introduced coolant is supplied to the inner wall surface of the plunger 111 through a plurality of coolant distribution passage 139 formed in the coolant distribution member 123.

플런저(111) 내벽면으로 공급된 냉각수는 플런저(111) 내벽면과 냉각수분배부재(123) 사이에 형성된 냉각수유동유로(143)를 따라 유동한 후, 냉각수분배부재(123)의 중앙영역에 형성된 냉각수배출유로(141)를 통해 상향 유동하여 플런저헤드(129)의 냉각수복귀유로(127)를 지나 외부로 배출된다.The cooling water supplied to the inner wall surface of the plunger 111 flows along the cooling water flow passage 143 formed between the inner wall surface of the plunger 111 and the cooling water distribution member 123 and is formed in the central region of the cooling water distribution member 123. Flowing upward through the cooling water discharge passage 141 is discharged to the outside through the cooling water return passage 127 of the plunger head 129.

그런데, 이러한 종래의 음극선관용 패널 성형장치에 있어서는, 플런저(111)의 내벽면과 저부면이 만나는 영역에 소정의 간격을 두고 냉각홀을 가공하거나 방전가공에 의한 함몰부를 형성하는 방법을 독립적으로 각각 사용하여 냉각홀만을 가공하는 방법에서는 플런저(111)의 모서리성형면(117)이 충분히 냉각되지 않았고, 방전가공에 의한 모서리냉각부(147)를 형성한 경우에는 변부영역의 냉각이 충분히 일어나지 않아 결국, 플런저(111)에 온도편차가 발생하여 패널(103)에 결함이 발생할 수 있으며, 플런저(111)에 열변형이 발생할 수 있는 문제점이 있다.By the way, in such a conventional cathode ray tube panel forming apparatus, each of the methods for processing cooling holes or forming depressions by electrical discharge machining at predetermined intervals in a region where the inner wall surface and the bottom surface of the plunger 111 meet each independently. In the method of processing only the cooling hole using the edge forming surface 117 of the plunger 111 is not sufficiently cooled, when the edge cooling portion 147 formed by the electric discharge processing, the cooling of the edge region does not occur sufficiently, eventually In this case, a temperature deviation may occur in the plunger 111 and a defect may occur in the panel 103, and thermal deformation may occur in the plunger 111.

따라서, 본 발명의 목적은, 패널을 성형할 때, 플런저의 온도를 적절하게 관리하여 플런저에 열변형이 발생하는 것을 억제시킬 수 있을 뿐만 아니라 패널의 품질을 향상시킬 수 있는 음극선관용 패널 성형장치를 제공하는 것이다.Accordingly, it is an object of the present invention to provide a panel forming apparatus for cathode ray tubes that can not only control the temperature of the plunger properly when molding the panel, but also suppress the occurrence of thermal deformation in the plunger and improve the quality of the panel. To provide.

도 1은 본 발명에 따른 음극선관용 패널 성형장치의 종단면도,1 is a longitudinal sectional view of a panel forming apparatus for a cathode ray tube according to the present invention;

도 2는 도 1의 플런저의 평면도,2 is a plan view of the plunger of FIG.

도 3은 도 2의 Ⅲ - Ⅲ선에 따른 단면도,3 is a cross-sectional view taken along the line III-III of FIG. 2;

도 4는 종래의 음극선관용 패널 성형장치의 종단면도,4 is a longitudinal sectional view of a conventional panel forming apparatus for cathode ray tubes;

도 5는 도 4의 플런저의 확대종단면도이다.5 is an enlarged longitudinal sectional view of the plunger of FIG.

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

1 : 지지대 3 : 패널1: support 3: panel

5 : 하부몰드 9 : 쉘몰드5: lower mold 9: shell mold

11 : 플런저 23 : 냉각수분배부재11: plunger 23: cooling water distribution member

25 : 냉각수공급유로 27 : 냉각수복귀유로25: cooling water supply passage 27: cooling water return passage

29 : 플런저헤드 31 : 하부부재29 plunger head 31 lower member

35 : 캡부재 37 : 냉각수수용공간35: cap member 37: cooling water receiving space

39 : 냉각수분배유로 43 : 냉각수유동유로39: cooling water distribution passage 43: cooling water flow passage

45 : 냉각홀 47 : 모서리냉각부45: cooling hole 47: corner cooling unit

상기 목적은, 본 발명에 따라, 하부몰드와, 상기 하부몰드에 대해 승강가능하고, 상기 하부몰드와의 사이에 패널의 성형공간을 형성하며 상부에 냉각수수용부를 갖는 플런저와, 상기 플런저의 냉각수수용부내에 수용되어 상기 플런저를 냉각시키는 냉각수공급부재를 갖는 음극선관용 패널 성형장치에 있어서, 상기 플런저의 냉각수수용부의 저부면 모서리영역에 방전가공에 의해 형성된 모서리함몰부와; 상기 플런저의 냉각수수용부의 내측변부를 따라 소정의 간격을 두고 외측으로 하향경사지게 드릴링에 의해 소정 깊이로 형성된 다수의 드릴링공을 갖는 것을 특징으로 하는 음극선관용 패널 성형장치에 의해 달성된다.The object is, according to the present invention, a plunger having a lower mold, a plungable relative to the lower mold, forming a forming space of the panel between the lower mold and having a coolant accommodating portion thereon, and for cooling water of the plunger. A cathode ray tube panel forming apparatus having a cooling water supply member housed in a portion to cool the plunger, the panel forming apparatus comprising: an edge recess formed by electric discharge machining in a bottom edge region of the cooling water receiving portion of the plunger; It is achieved by the cathode ray tube panel forming apparatus, characterized in that it has a plurality of drilling holes formed to a predetermined depth by drilling inclined downward to the outside at a predetermined interval along the inner edge of the cooling water receiving portion of the plunger.

이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 음극선관용 패널 성형장치의 종단면도이며, 도 2는 도 1의 플런저의 평면도이고, 도 3은 도 2의 Ⅲ - Ⅲ선에 따른 단면도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 음극선관용 패널 성형장치는 종래의 음극선관용 패널 성형장치와 마찬가지로 지지대(1)와, 지지대(1)에 고정되며, 패널(3)의 외표면을 성형시키는 하부몰드(5)와, 하부몰드(5)의 상측 단부에 배치되어 패널(3)의 접합단부면(7)을 성형시키는 사각루프형상의 쉘몰드(9)와, 하부몰드(5)에 대해 승강운동가능하며, 패널(3)의 내표면을 성형시키는 플런저(11)를 갖는다.1 is a longitudinal cross-sectional view of a panel forming apparatus for a cathode ray tube according to the present invention, Figure 2 is a plan view of the plunger of Figure 1, Figure 3 is a cross-sectional view taken along line III-III of Figure As shown in these figures, the cathode ray tube panel forming apparatus according to the present invention is fixed to the support 1 and the support 1 like the conventional cathode ray tube panel forming apparatus, and forms the outer surface of the panel 3. To the lower mold 5, to the upper end of the lower mold 5, and to the square mold shell mold 9 and the lower mold 5, which form a joint end surface 7 of the panel 3, respectively. It is movable up and down and has a plunger 11 for shaping the inner surface of the panel 3.

하부몰드(5)의 내벽면과 플런저(11)의 외벽면에는 패널(3)의 전방곡률을 성형하기 위한 전방성형면(13)과, 모서리부(15)의 성형을 위한 모서리성형면(17), 그리고 스커트부(19)의 성형을 위한 스커트성형면(21)이 각각 대응하여 형성되어 있다.On the inner wall surface of the lower mold 5 and the outer wall surface of the plunger 11, the front molding surface 13 for forming the front curvature of the panel 3, and the corner molding surface 17 for forming the corner portion 15 ) And a skirt forming surface 21 for forming the skirt portion 19 are correspondingly formed.

플런저(11)의 내측 함몰부에는 플런저(11)를 냉각시키기 위해 냉각수분배부재(23)가 수용되어 있으며, 플런저(11)의 상측에는 플런저(11)와 일체로 승강운동하며, 냉각수분배부재(23)에 냉각수를 공급하는 냉각수공급유로(25)와, 플런저(11)의 내벽면을 냉각시킨 냉각수를 회수하는 냉각수복귀유로(27)가 형성된 플런저헤드(29)가 스크류(49)에 의해 결합되어 있다.A cooling water distribution member 23 is accommodated in the inner recessed portion of the plunger 11 to cool the plunger 11, and an upper and lower portions of the plunger 11 move up and down with the plunger 11, and the cooling water distribution member ( 23, the plunger head 29 having a cooling water supply passage 25 for supplying the cooling water to the cooling water return passage 27 for recovering the cooling water for cooling the inner wall of the plunger 11 is coupled by the screw 49. It is.

냉각수분배부재(23)는 플런저(11)의 내벽면과 인접하게 설치된 하부부재(31)와, 하부부재(31)와 스크류(49)에 의해 결합되며, 중앙영역에 플런저헤드(29)의 냉각수공급유로(25)와 연통되도록 냉각수유입유로(33)가 형성되어 플런저헤드(29)의 하단부에 결합되는 캡부재(35)를 갖는다. 하부부재(31)와 캡부재(35) 사이에는 냉각수공급유로(25)를 통해 공급된 냉각수를 수용하는 냉각수수용공간(37)이 형성되어 있다.The cooling water distribution member 23 is coupled by the lower member 31 installed adjacent to the inner wall surface of the plunger 11, the lower member 31 and the screw 49, and the cooling water of the plunger head 29 in the central region. The cooling water inflow passage 33 is formed to communicate with the supply passage 25 and has a cap member 35 coupled to the lower end of the plunger head 29. Between the lower member 31 and the cap member 35, a cooling water receiving space 37 for receiving the cooling water supplied through the cooling water supply passage 25 is formed.

하부부재(31)에는 냉각수수용공간(37)으로부터 냉각수를 플런저(11)의 내벽면으로 향해 분배하는 복수의 냉각수분배유로(39)가 형성되어 있으며, 플런저(11)의 내벽면을 냉각시킨 냉각수가 플런저헤드(29)의 냉각수복귀유로(27)로 향할 수 있도록 판면을 관통한 복수의 냉각수배출유로(41)가 형성되어 있다. 또한, 하부부재(31)와 플런저(11)의 내벽면 사이에는 냉각수분배유로(39)로부터 공급된 냉각수가 유동할 수 있도록 냉각수유동유로(43)가 형성되어 있다.The lower member 31 has a plurality of cooling water distribution passages 39 for distributing the cooling water from the cooling water receiving space 37 toward the inner wall surface of the plunger 11, and the cooling water cooling the inner wall surface of the plunger 11. A plurality of cooling water discharge passages 41 are formed to penetrate the plate surface so as to be directed to the cooling water return passage 27 of the plunger head 29. Further, a cooling water flow passage 43 is formed between the lower member 31 and the inner wall surface of the plunger 11 so that the cooling water supplied from the cooling water distribution passage 39 can flow.

한편, 플런저(11)의 내측벽과 저부면이 만나는 변부영역에는 외측을 향해 하향 경사지게 소정 간격을 두고 복수의 냉각홀(45)이 형성되어 있다. 이들 냉각홀(45)은 소정의 깊이를 가지고 드릴가공되어 있으며, 플런저(11)의 내측벽과 저부면이 만나는 모서리영역에는 외측을 향해 소정 함몰된 모서리냉각부(47)가 방전가공되어 있다.On the other hand, in the edge region where the inner wall and the bottom surface of the plunger 11 meet, a plurality of cooling holes 45 are formed at predetermined intervals inclined downward toward the outside. These cooling holes 45 are drilled to have a predetermined depth, and the edge cooling portion 47 recessed outward is discharged in the corner region where the inner wall and the bottom surface of the plunger 11 meet.

이상과 같은 구성에 의하여, 용융상태의 글라스고브가 하부몰드(5)상에 공급되면 플런저(11)가 가압위치까지 하강하여 글라스고브를 가압하게 된다. 플런저(11)의 가압에 의해 글라스고브는 플런저(11)의 외표면과 하부몰드(5)의 내표면에 형성된 이격공간을 따라 유동하여 패널(3)이 성형된다.By the above configuration, when the glass gob in the molten state is supplied onto the lower mold 5, the plunger 11 is lowered to the pressurized position to pressurize the glass gob. By pressing the plunger 11, the glass gob flows along the separation space formed on the outer surface of the plunger 11 and the inner surface of the lower mold 5 to form the panel 3.

패널(3)의 성형과정중에 플런저(11)의 온도를 관리하지 않게 되면 플런저(11)의 각 부위에 온도편차가 발생하여 패널(3)의 품질이 저하됨에 따라 냉각수분배부재(23)를 통해 냉각수를 공급하여 플런저(11)를 냉각하게 된다. 플런저헤드(29)의 냉각수공급유로(25)를 통해 냉각수가 냉각수분배부재(23)에 형성된 냉각수수용공간(37)에 공급되면, 하부부재(31)에 형성된 복수의 냉각수분배유로(39)를 따라 냉각수가 플런저(11)의 내벽면에 분배 공급된다.If the temperature of the plunger 11 is not managed during the forming process of the panel 3, temperature deviation occurs in each part of the plunger 11, and thus the quality of the panel 3 is degraded. Cooling water is supplied to cool the plunger 11. When the cooling water is supplied to the cooling water receiving space 37 formed in the cooling water distribution member 23 through the cooling water supply passage 25 of the plunger head 29, the plurality of cooling water distribution passages 39 formed in the lower member 31 are opened. Accordingly, the coolant is distributed and supplied to the inner wall surface of the plunger 11.

분배된 냉각수는 플런저(11)의 내벽면과 냉각수분배부재(39) 사이에 형성된 냉각수유동유로(43)를 따라 유동하면서 플런저(11)를 냉각시킨 후, 하부부재(31)에 형성된 냉각수배출유로(41)를 통해 상측으로 이동하여 플런저헤드(29)의 냉각수복귀유로(27)를 지나 외부로 유출된다.The distributed cooling water cools the plunger 11 while flowing along the cooling water flow passage 43 formed between the inner wall surface of the plunger 11 and the cooling water distribution member 39, and then the cooling water discharge passage formed in the lower member 31. It moves upward through 41 and flows out through the cooling water return flow path 27 of the plunger head 29.

이렇게, 플런저(11)를 냉각할 때, 하부부재(31)에 형성된 냉각수분배유로(39)를 통해 플런저(11)의 내벽면에 분배된 냉각수가 플런저(11)의 내측벽과 저부면이 만나는 변부영역에 형성된 냉각홀(45)과, 모서리영역에 형성된 모서리냉각부(47)를 통해 플런저(11)의 모서리성형면(17)과 근접한 영역까지 유입됨에 따라 모서리성형면(17) 주변영역을 충분히 냉각시킬 수 있어 온도편차에 따른 플런저(11)의 열변형을 억제시킬 수 있을 뿐만 아니라 패널(3)의 품질을 향상시킬 수 있다.Thus, when cooling the plunger 11, the coolant distributed to the inner wall surface of the plunger 11 through the cooling water distribution passage 39 formed in the lower member 31, the inner wall and the bottom surface of the plunger 11 meets Through the cooling hole 45 formed in the edge region and the corner cooling portion 47 formed in the corner region, the peripheral region of the edge forming surface 17 is formed as the region close to the corner forming surface 17 of the plunger 11 is introduced. It can be sufficiently cooled to suppress the thermal deformation of the plunger 11 due to the temperature deviation, and can also improve the quality of the panel 3.

이상에서 설명한 바와 같이, 본 발명에 따르면, 패널을 성형할 때, 플런저의 온도를 적절하게 관리하여 플런저에 열변형이 발생하는 것을 억제시킬 수 있을 뿐만 아니라 패널의 품질을 향상시킬 수 있는 음극선관용 패널 성형장치가 제공된다.As described above, according to the present invention, a panel for a cathode ray tube which can not only suppress the occurrence of heat deformation in the plunger by appropriately managing the temperature of the plunger when forming the panel, but also improve the quality of the panel. A molding apparatus is provided.

Claims (1)

하부몰드와, 상기 하부몰드에 대해 승강가능하고, 상기 하부몰드와의 사이에 패널의 성형공간을 형성하며 상부에 냉각수수용부를 갖는 플런저와, 상기 플런저의 냉각수수용부내에 수용되어 상기 플런저를 냉각시키는 냉각수공급부재를 갖는 음극선관용 패널 성형장치에 있어서,A plunger which is movable up and down with respect to the lower mold, forms a molding space of the panel between the lower mold, and has a cooling water accommodating portion thereon, and is accommodated in the cooling water accommodating portion of the plunger to cool the plunger. In the cathode ray tube panel forming apparatus having a cooling water supply member, 상기 플런저의 냉각수수용부의 저부면 모서리영역에 방전가공에 의해 형성된 모서리함몰부와;An edge recess formed by electric discharge machining in a corner of the bottom surface of the coolant accommodating portion of the plunger; 상기 플런저의 냉각수수용부의 내측변부를 따라 소정의 간격을 두고 외측으로 하향경사지게 드릴링에 의해 소정 깊이로 형성된 다수의 드릴링공을 갖는 것을 특징으로 하는 음극선관용 패널 성형장치.And a plurality of drilling holes formed to a predetermined depth by drilling downwardly inclined outwardly at a predetermined interval along the inner edge of the cooling water accommodating part of the plunger.
KR1019980023403A 1998-06-22 1998-06-22 Panel Forming Device for Cathode Ray Tube KR100355551B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432766B1 (en) * 2001-05-21 2004-05-24 한국전기초자 주식회사 Apparatus for forming crt flat panel and the crt flat panel formed by the apparatus

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KR100438411B1 (en) * 2001-05-21 2004-07-02 한국전기초자 주식회사 Apparatus for forming crt flat panel and the crt flat panel formed by the apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432766B1 (en) * 2001-05-21 2004-05-24 한국전기초자 주식회사 Apparatus for forming crt flat panel and the crt flat panel formed by the apparatus

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