JPH0366260B2 - - Google Patents
Info
- Publication number
- JPH0366260B2 JPH0366260B2 JP25220283A JP25220283A JPH0366260B2 JP H0366260 B2 JPH0366260 B2 JP H0366260B2 JP 25220283 A JP25220283 A JP 25220283A JP 25220283 A JP25220283 A JP 25220283A JP H0366260 B2 JPH0366260 B2 JP H0366260B2
- Authority
- JP
- Japan
- Prior art keywords
- bending
- spacer
- glass
- bent
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011521 glass Substances 0.000 claims description 21
- 238000005452 bending Methods 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/06—Re-forming tubes or rods by bending
- C03B23/065—Re-forming tubes or rods by bending in only one plane, e.g. for making circular neon tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
【発明の詳細な説明】
(1) 技術分野
本発明はスペーサ用ガラス枠の成形方法に関
し、とくに細長い帯状ガラス板の折り曲げ成形方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field The present invention relates to a method for forming a glass frame for a spacer, and more particularly to a method for bending and forming an elongated strip-shaped glass plate.
(2) 従来技術
細長い帯状の板ガラスなどの棒状ガラスを枠状
に折り曲げて平型螢光表示管の上下基板間のスペ
ーサとして用いることが知られている。このスペ
ーサ用として折り曲げ加工するとき、折り曲げ部
をガストーチで加熱軟化させておいて折り曲げる
のであるが、従来例として第１図に示すようにガ
ストーチ２の配置された側と反対方向に折り曲げ
ると、ガラス片１の折り曲げ部における肉厚が薄
くなり、高真空が要求される螢光表示管などのス
ペーサとして用いる場合、リークパスが短くなり
信頼性上の点で好ましくない。(2) Prior Art It is known that a rod-shaped glass such as a long and narrow band-shaped plate glass is bent into a frame shape and used as a spacer between the upper and lower substrates of a flat fluorescent display tube. When bending this spacer, the bent part is heated and softened with a gas torch before being bent.As shown in FIG. The thickness of the bent portion of the piece 1 becomes thinner, and when used as a spacer for a fluorescent display tube or the like which requires a high vacuum, the leak path becomes short, which is undesirable in terms of reliability.
(3) 発明の目的
本発明は、棒状ガラスの折り曲げ部の薄肉化を
防止した折り曲げ成形方法を提供することを目的
とし、とくに螢光表示管などのスペーサ枠の折り
曲げに適した帯状ガラス板の折り曲げ成形方法を
提供することを目的とする。(3) Purpose of the Invention The object of the present invention is to provide a method of bending and forming a bar-shaped glass plate that prevents thinning of the bent portion of the bar-shaped glass plate, and is particularly suitable for bending a spacer frame of a fluorescent display tube. The purpose of the present invention is to provide a folding method.
(4) 発明の構成および作用
本発明によればスペーサ用ガラス枠となる棒状
ガラスの一方の面から加熱し、折り曲げる部分を
軟化した状態で前記ガラスを前記一方の面を内側
にして折り曲げ工程と、前記折り曲げ工程の後、
折り曲げ部が硬化する前に折り曲げ平面とほぼ垂
直な上下方向から折り曲げ部を加圧して前記折り
曲げ部の前記上下方向に生じた突出部を平坦化す
る工程とを有することを特徴とするスペーサ用ガ
ラス枠の成形方法が得られる。(4) Structure and operation of the invention According to the present invention, a step of heating a rod-shaped glass serving as a glass frame for a spacer from one side and bending the glass with the one side inside in a state where the portion to be bent is softened. , after the bending step,
A glass for a spacer, comprising the step of flattening a protrusion of the bent part in the vertical direction by applying pressure to the bent part from a vertical direction substantially perpendicular to the bending plane before the bent part is hardened. A method for forming a frame is obtained.
以下、図面を参照して本発明を説明する。 The present invention will be described below with reference to the drawings.
第２図ａ，ｂは本発明による帯状ガラス板１の
折り曲げ方法を説明する斜視図であり、ガストー
チ２で折り曲げるべき個所を加熱軟化させたの
ち、ガストーチ２を曲げの邪魔にならないところ
へ移動させて、すばやくガラス細片の一端１１を
ガストーチ２のあつた場所へ向けてすばやく押し
てやる。この工程によつて第２図ｂに示すように
折り曲げ部の肉厚は薄くならず、むしろ厚くな
る。すなわち軟化した部分が厚み方向の内側へは
み出るとともに、スペーサとしての高さ方向にも
突出部を生ずる。よつて、スペーサとして用いる
場合にはこのままでは不適当である。そこで本発
明では、さらに追加工程として第３図に示すよう
に高さ方向に突出した部分を折り曲げ部が硬化す
る前にすばやく上下方向から治具３をほぼ同時に
押し当てて加圧し平坦化することによりスペーサ
として好ましいスペーサ用ガラス枠を得ることが
できる。 FIGS. 2a and 2b are perspective views illustrating the method of bending the band-shaped glass plate 1 according to the present invention, in which the portion to be bent is heated and softened with the gas torch 2, and then the gas torch 2 is moved to a place where it does not interfere with the bending. Then, quickly push one end 11 of the glass strip toward the spot where the gas torch 2 was. As a result of this process, the thickness of the folded portion does not become thinner, as shown in FIG. 2b, but rather becomes thicker. That is, the softened portion protrudes inward in the thickness direction and also forms a protrusion in the height direction as a spacer. Therefore, when used as a spacer, it is unsuitable as it is. Therefore, in the present invention, as an additional step, as shown in FIG. 3, before the bent portion hardens, the portion protruding in the height direction is quickly pressed with a jig 3 from above and below almost simultaneously to apply pressure and flatten it. Accordingly, a glass frame for a spacer which is preferable as a spacer can be obtained.
なお、本発明の対象とするガラス棒は図示した
帯状のガラス板に限られないことは言うまでもな
い。 It goes without saying that the glass rod to which the present invention is applied is not limited to the illustrated band-shaped glass plate.
第４図ａ，ｂ，ｃはスペーサ枠を形成する場合
の折り曲げ工程の一実施例を説明する概略平面図
である。第４図ａに示すようにガラス片１の２個
所を同時にガストーチで加熱し、２個所をほぼ同
時に加熱側か内側になるように折り曲げ（第４図
ｂ）、かつ折り曲げ部の突起を押しつぶす工程を
経たのち、第４図ｂに示すごとく第３の折り曲げ
個所を内側から加熱して第４図ｃに示すように再
び加熱側が内側になるように折り曲げ、かつ折り
曲げ部の突起を押しつぶす。第４図ｃに示すよう
に折り曲げ加工された枠状スペーサの両端部は排
気管をとりつけるための間隙を設けたままでも良
いし、必要に応じて両端部を加熱融着してもかま
わない。 FIGS. 4a, 4b, and 4c are schematic plan views illustrating an embodiment of the bending process when forming a spacer frame. As shown in Figure 4a, two parts of the glass piece 1 are heated at the same time with a gas torch, and the two parts are bent almost simultaneously so that they are on the heating side or inside (Fig. 4b), and the protrusions at the bent parts are crushed. After that, the third bent part is heated from the inside as shown in Fig. 4b, and the heated side is bent again as shown in Fig. 4c, and the protrusion at the bent part is crushed. As shown in FIG. 4c, both ends of the bent frame-shaped spacer may be left with a gap for attaching the exhaust pipe, or both ends may be heat-fused as required.
第４図に示した実施例は、折り曲げ工程を２個
所同時に行なうことによつて作業時間の短縮を計
つたものである。 The embodiment shown in FIG. 4 aims to shorten the working time by performing the bending process at two locations simultaneously.
(5) 効 果
以上述べたとおり、帯状ガラス板の加熱側を内
側にして折り曲げるという単純な方法で折り曲げ
部が薄肉化することを防止できたので、螢光表示
管などのスペーサ用枠として信頼性の良いものを
提供することができる。(5) Effects As mentioned above, we were able to prevent the bent portion from becoming thinner by simply bending the glass strip with the heated side facing inside, making it reliable as a frame for spacers such as fluorescent display tubes. We can offer you something of good quality.
なお、加熱側を内側にして折り曲げるというこ
とは、ガストーチのある側へあえて曲げるという
ことであり、このことは前述した従来法では折り
曲げ部が薄肉化するという問題を認識したからこ
そなし得たものであつて、従来技術からは予期し
得ない作用効果を奏しているものである。 In addition, folding with the heating side inward means intentionally bending it toward the side where the gas torch is located, and this was possible because we recognized the problem that the folded part becomes thinner with the conventional method mentioned above. However, it has effects that could not be expected from the conventional technology.
第１図は従来の折り曲げ法を説明する斜視図。
第２図ａ，ｂは本発明による折り曲げの一実施例
を説明する斜視図。第３図は本発明の折り曲げ工
程のあとの追加工程を説明する斜視図。第４図
ａ，ｂ，ｃは本発明を用いたスペーサ用枠を形成
する場合の一実施例を示す工程図。
１……ガラス棒、２……ガストーチ、３……押
圧治具。
FIG. 1 is a perspective view illustrating a conventional folding method.
FIGS. 2a and 2b are perspective views illustrating an embodiment of folding according to the present invention. FIG. 3 is a perspective view illustrating an additional step after the folding step of the present invention. FIGS. 4a, 4b, and 4c are process diagrams showing one embodiment of forming a spacer frame using the present invention. 1...Glass rod, 2...Gas torch, 3...Press jig.
Claims (1)
の面から加熱し、折り曲げる部分を軟化した状態
で前記ガラスを前記一方の面を内側にして折り曲
げる工程と、前記折り曲げ工程の後、折り曲げ部
が硬化する前に折り曲げ平面とほぼ垂直な上下方
向から折り曲げ部を加圧して前記折り曲げ部の前
記上下方向に生じた突出部を平坦化する工程とを
有することを特徴とするスペーサ用ガラス枠の成
形方法。1. A step of heating a rod-shaped glass that will become a spacer glass frame from one side to soften the bending portion and then bending the glass with the one surface inward, and after the bending step, the bent portion is hardened. A method for forming a glass frame for a spacer, comprising the step of flattening a protrusion of the bent portion in the vertical direction by applying pressure to the bent portion from a vertical direction substantially perpendicular to the bending plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25220283A JPS60141631A (en) | 1983-12-27 | 1983-12-27 | Bending forming process of bar glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25220283A JPS60141631A (en) | 1983-12-27 | 1983-12-27 | Bending forming process of bar glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60141631A JPS60141631A (en) | 1985-07-26 |
| JPH0366260B2 true JPH0366260B2 (en) | 1991-10-16 |
Family
ID=17233918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25220283A Granted JPS60141631A (en) | 1983-12-27 | 1983-12-27 | Bending forming process of bar glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60141631A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2514629B2 (en) * | 1985-09-09 | 1996-07-10 | 住友電気工業株式会社 | Method for manufacturing optical fiber preform |
| JPH03187938A (en) * | 1989-12-18 | 1991-08-15 | Ueno Seisakusho:Kk | Forming of glass mold using glass base and glass mold made of glass base |
| US6935137B2 (en) * | 2001-10-09 | 2005-08-30 | General Electric Company | Method of and apparatus for forming discharge tubes of low-pressure discharge lamps |
-
1983
- 1983-12-27 JP JP25220283A patent/JPS60141631A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60141631A (en) | 1985-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0366260B2 (en) | ||
| JPS6149735A (en) | Method for forming projected part on metallic pipe | |
| US2273488A (en) | Method of sealing electrical conductors to quartz | |
| JPH04155726A (en) | Manufacture of display tube cover glass | |
| JPS60210550A (en) | Method for forming glass spacer | |
| JPS59140422A (en) | Manufacture of flexible liquid crystal display element | |
| JP2686721B2 (en) | Small fluorescent lamp manufacturing method | |
| JP3101209B2 (en) | Butt bonding equipment for plate materials by high frequency heating | |
| JPH11345569A (en) | Dividing device for cathode-ray tube and dividing method for cathode-ray tube | |
| RU2142436C1 (en) | Method of manufacture of glass rectangular frame for shell of vacuum luminescent instrument and device for its embodiment | |
| JP3309370B2 (en) | Cathode ray tube dividing device and cathode ray tube dividing method | |
| JPS6311287B2 (en) | ||
| JP3470437B2 (en) | Flat cathode ray tube | |
| JP2000011867A (en) | Manufacture of cathode-ray tube color selection electrode | |
| JPS61209419A (en) | Production of liquid crystal cell | |
| JPS6095833A (en) | Production of fluorescent character display tube | |
| JP2000299058A (en) | Method for separating cathode-ray tube and device for separating cathode-ray tube | |
| JPH0610604Y2 (en) | Small cathode ray tube | |
| JPS6145546A (en) | Picture display device | |
| JPS58110780A (en) | Production of door sash for vehicle | |
| JPS63242936A (en) | Forming of glass pipe | |
| JP3089796B2 (en) | How to assemble an electron gun | |
| JP2003217446A (en) | Method of manufacturing color cathode ray tube | |
| JPS62250924A (en) | Sealing method for filter cloth in air filter unit | |
| JPS5844646A (en) | Method of molding mask for color picture tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |